// PeptidePal mock data
const PEPTIDES = [
  {
    id: "reta",
    name: "Retatrutide",
    tag: "Metabolic",
    tagline: "Triple agonist making waves in weight & insulin research.",
    molecule: "GLP-1 / GIP / GCG",
    halfLife: "~6 days",
    route: "Subcutaneous",
    timing: "Weekly",
    color: "#5FBF5F",
    tint: "tinted-green",
    placeholder: "molecule rendering",
    about:
      "Retatrutide is an investigational triple-receptor agonist that engages GLP-1, GIP, and glucagon receptors. Early phase II studies suggest substantial effects on body composition and metabolic markers.",
    benefits: ["Appetite regulation", "Insulin sensitivity", "Energy expenditure"],
    sideEffects: ["GI discomfort (early)", "Injection site reaction", "Fatigue at titration"],
    splat: "If you're titrating up, I'll remind you every Sunday night! Nausea usually passes by week 3. 🫡",
  },
  {
    id: "ghkcu",
    name: "GHK-Cu",
    tag: "Skin · Recovery",
    tagline: "A copper-binding tripeptide studied for skin remodeling.",
    molecule: "Cu-Gly-His-Lys",
    halfLife: "~0.2 hours",
    route: "Topical · Subcutaneous",
    timing: "Daily",
    color: "#7FB8D6",
    tint: "tinted-sky",
    placeholder: "copper helix",
    about:
      "GHK-Cu is a naturally occurring copper tripeptide. Research explores its role in wound healing, collagen expression, and antioxidant signaling.",
    benefits: ["Collagen support", "Antioxidant effects", "Hair follicle vitality"],
    sideEffects: ["Transient redness (topical)", "Metallic taste (oral — uncommon)"],
    splat: "Topical today! Cleanse first, a pea-sized dab on freshly-washed skin. No sunscreen conflict. ✨",
  },
  {
    id: "mt2",
    name: "Melanotan-2",
    tag: "Pigment · Novel",
    tagline: "A synthetic analog of α-MSH studied for melanogenesis.",
    molecule: "MC1R / MC4R agonist",
    halfLife: "~1 hour",
    route: "Subcutaneous",
    timing: "Loading phase",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "pigment swatch",
    about:
      "Melanotan-2 is a synthetic analog of alpha-melanocyte-stimulating hormone. Under study for pigmentation and appetite pathways; not FDA-approved.",
    benefits: ["Melanin response", "UV protective signaling (research)"],
    sideEffects: ["Nausea (loading)", "Flushing", "Spontaneous freckling"],
    splat: "Low & slow! Start at half your planned dose, take it with dinner, and chase it with ginger tea. 🫖",
  },
  {
    id: "motsc",
    name: "Mots-C",
    tag: "Mitochondrial",
    tagline: "A mitochondrial-derived peptide with metabolic signaling roles.",
    molecule: "16-aa mt-DNA encoded",
    halfLife: "~2 hours",
    route: "Subcutaneous",
    timing: "3x weekly",
    color: "#F2C94C",
    tint: "tinted-sun",
    placeholder: "mitochondria",
    about:
      "Mots-C is an endogenous peptide encoded within mitochondrial DNA. Research explores its role in insulin sensitivity, AMPK signaling, and exercise mimetics.",
    benefits: ["Metabolic flexibility", "AMPK activation", "Exercise response"],
    sideEffects: ["Mild injection bruising", "Transient warmth"],
    splat: "Post-workout is my favorite time for this one — Mots-C loves a good mitochondria flex. 💪",
  },
  {
    id: "tesa",
    name: "Tesamorelin",
    tag: "GH axis",
    tagline: "A GHRH analog studied for visceral adiposity.",
    molecule: "GHRH analog (44-aa)",
    halfLife: "~26 minutes",
    route: "Subcutaneous",
    timing: "Daily · bedtime",
    color: "#F26B4A",
    tint: "tinted-coral",
    placeholder: "pituitary axis",
    about:
      "Tesamorelin is a synthetic analog of growth hormone-releasing hormone. FDA-approved for HIV-associated lipodystrophy; studied for body composition.",
    benefits: ["Visceral fat reduction", "Sleep architecture", "IGF-1 support"],
    sideEffects: ["Injection site irritation", "Joint aches (initial weeks)"],
    splat: "Bedtime dose! Inject 30 min before you hit the pillow — you'll sleep like a compost heap. 💤",
  },
  {
    id: "bpc157",
    name: "BPC-157",
    tag: "Healing",
    tagline: "A pentadecapeptide studied for tissue repair and gut healing.",
    molecule: "15-aa gastric peptide",
    halfLife: "~4 hours",
    route: "Subcutaneous · Oral",
    timing: "Daily",
    color: "#5FBF5F",
    tint: "tinted-green",
    placeholder: "tissue repair",
    about:
      "Body Protection Compound-157 is a synthetic fragment derived from a protein in gastric juice. Research explores its role in angiogenesis, tendon healing, and gut barrier integrity.",
    benefits: ["Tendon and ligament repair", "Gut lining support", "Angiogenesis"],
    sideEffects: ["Mild injection site reaction", "Headache (rare)"],
    splat: "Inject near the injury when you can — local action seems to help. Pair with rest, not heroics. 🩹",
  },
  {
    id: "tb500",
    name: "TB-500",
    tag: "Healing",
    tagline: "A synthetic fragment of Thymosin Beta-4 used for soft tissue recovery.",
    molecule: "Tβ4 fragment (17-23)",
    halfLife: "~2 hours",
    route: "Subcutaneous · Intramuscular",
    timing: "2x weekly",
    color: "#F26B4A",
    tint: "tinted-coral",
    placeholder: "actin filament",
    about:
      "TB-500 is a synthetic peptide based on a region of Thymosin Beta-4 thought to drive cell migration and actin sequestration. Studied in soft tissue and muscle recovery contexts.",
    benefits: ["Muscle recovery", "Flexibility", "Wound healing"],
    sideEffects: ["Lethargy (early weeks)", "Head rush after injection"],
    splat: "Loading phase first, then a maintenance dose. Don't skip leg day just because you can — recover smarter. 💪",
  },
  {
    id: "ipamorelin",
    name: "Ipamorelin",
    tag: "GH axis",
    tagline: "A selective ghrelin mimetic that nudges GH release without the cortisol spike.",
    molecule: "Pentapeptide GHRP",
    halfLife: "~2 hours",
    route: "Subcutaneous",
    timing: "Nightly",
    color: "#F2C94C",
    tint: "tinted-sun",
    placeholder: "pulse spike",
    about:
      "Ipamorelin is a selective growth hormone secretagogue that mimics ghrelin at the GHS-R1a receptor. Notable for triggering GH pulses without raising cortisol or prolactin meaningfully.",
    benefits: ["Lean tissue support", "Sleep depth", "Gentle GH pulse"],
    sideEffects: ["Hunger spike", "Mild head pressure"],
    splat: "Empty stomach, lights low, bedtime. Carbs blunt the pulse — keep dinner an hour back. 🌙",
  },
  {
    id: "cjc1295",
    name: "CJC-1295",
    tag: "GH axis",
    tagline: "A long-acting GHRH analog often paired with a ghrelin mimetic.",
    molecule: "GHRH analog (with/without DAC)",
    halfLife: "~8 days (DAC)",
    route: "Subcutaneous",
    timing: "Weekly · or nightly",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "GHRH chain",
    about:
      "CJC-1295 is a modified GHRH analog. The DAC variant binds albumin for an extended half-life; the no-DAC version (mod GRF 1-29) gives a sharp pulse useful for stacking.",
    benefits: ["Sustained GH baseline", "Recovery", "IGF-1 support"],
    sideEffects: ["Water retention", "Tingling extremities", "Vivid dreams"],
    splat: "If you're stacking with ipamorelin, mix in the same syringe — Splat approves. 🧪",
  },
  {
    id: "sema",
    name: "Semaglutide",
    tag: "Metabolic",
    tagline: "A long-acting GLP-1 agonist that quietly rewrites appetite signaling.",
    molecule: "GLP-1 receptor agonist",
    halfLife: "~7 days",
    route: "Subcutaneous · Oral",
    timing: "Weekly",
    color: "#7FB8D6",
    tint: "tinted-sky",
    placeholder: "GLP-1 receptor",
    about:
      "Semaglutide is a GLP-1 receptor agonist FDA-approved for type-2 diabetes and chronic weight management. It slows gastric emptying and modulates central appetite circuits.",
    benefits: ["Appetite reduction", "Glycemic control", "Cardiometabolic markers"],
    sideEffects: ["Nausea (titration)", "Constipation", "Fatigue"],
    splat: "Eat slowly, hydrate aggressively, and don't fight the fullness — that's the molecule talking. 🥣",
  },
  {
    id: "tirz",
    name: "Tirzepatide",
    tag: "Metabolic",
    tagline: "A dual GIP and GLP-1 agonist with striking metabolic effects.",
    molecule: "GIP / GLP-1 dual agonist",
    halfLife: "~5 days",
    route: "Subcutaneous",
    timing: "Weekly",
    color: "#5FBF5F",
    tint: "tinted-green",
    placeholder: "dual receptor",
    about:
      "Tirzepatide engages both GIP and GLP-1 receptors. Phase III trials show pronounced effects on body weight, A1c, and lipid markers compared to single-receptor agonists.",
    benefits: ["Weight loss", "A1c reduction", "Lipid improvements"],
    sideEffects: ["GI upset (early)", "Decreased appetite", "Burping"],
    splat: "Titrate, don't sprint. Most people peak nausea around week 2 then it eases. 🎯",
  },
  {
    id: "selank",
    name: "Selank",
    tag: "Cognitive",
    tagline: "A synthetic analog of tuftsin studied for anxiolytic and nootropic effects.",
    molecule: "Heptapeptide (tuftsin analog)",
    halfLife: "~30 minutes",
    route: "Intranasal",
    timing: "As needed",
    color: "#7FB8D6",
    tint: "tinted-sky",
    placeholder: "BDNF wave",
    about:
      "Selank is a heptapeptide developed in Russia from the immunomodulatory peptide tuftsin. Research suggests anxiolytic effects without sedation and modulation of GABA and BDNF.",
    benefits: ["Calm focus", "Anxiety reduction", "BDNF modulation"],
    sideEffects: ["Nasal irritation", "Mild fatigue (rare)"],
    splat: "One spray each nostril, head tipped back. Don't blow your nose for 5 minutes! 👃",
  },
  {
    id: "semax",
    name: "Semax",
    tag: "Cognitive",
    tagline: "A short ACTH-derived peptide studied for cognition and neuroprotection.",
    molecule: "ACTH (4-10) analog",
    halfLife: "~30 minutes",
    route: "Intranasal",
    timing: "Morning",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "synapse spark",
    about:
      "Semax is a synthetic peptide based on a fragment of adrenocorticotropic hormone. Russian research links it to BDNF expression, attention, and recovery after ischemic events.",
    benefits: ["Attention", "Memory consolidation", "Neuroprotection"],
    sideEffects: ["Overstimulation", "Mild irritability if overdosed"],
    splat: "Morning only — late doses can keep you wired past bedtime. ☕",
  },
  {
    id: "dsip",
    name: "DSIP",
    tag: "Sleep",
    tagline: "Delta sleep-inducing peptide, an old curiosity in sleep architecture.",
    molecule: "Nonapeptide",
    halfLife: "~7 minutes",
    route: "Subcutaneous",
    timing: "Bedtime",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "delta wave",
    about:
      "DSIP is a naturally occurring nonapeptide first isolated from rabbit brain. Research is sparse but suggests modulation of slow-wave sleep and stress response.",
    benefits: ["Deep sleep onset", "Stress modulation"],
    sideEffects: ["Vivid dreams", "Morning grogginess (uncommon)"],
    splat: "Reconstitute carefully — DSIP is delicate. Inject 30 min before lights out. 💤",
  },
  {
    id: "epithalon",
    name: "Epithalon",
    tag: "Longevity",
    tagline: "A tetrapeptide studied for telomerase activation and circadian effects.",
    molecule: "Ala-Glu-Asp-Gly",
    halfLife: "~20 minutes",
    route: "Subcutaneous",
    timing: "Daily · cycled",
    color: "#F2C94C",
    tint: "tinted-sun",
    placeholder: "telomere cap",
    about:
      "Epithalon is a synthetic tetrapeptide based on a pineal extract called epithalamin. Russian research suggests effects on telomerase activity, melatonin rhythms, and aging biomarkers.",
    benefits: ["Telomerase activity (research)", "Sleep rhythm", "Pineal support"],
    sideEffects: ["Mild drowsiness", "Injection site warmth"],
    splat: "Most folks run a 10-day course twice a year. Patience peptide — slow returns. ⏳",
  },
  {
    id: "aod9604",
    name: "AOD-9604",
    tag: "Metabolic",
    tagline: "A modified fragment of human GH studied for fat metabolism.",
    molecule: "hGH (177-191) fragment",
    halfLife: "~30 minutes",
    route: "Subcutaneous",
    timing: "Morning · fasted",
    color: "#F26B4A",
    tint: "tinted-coral",
    placeholder: "lipolysis dial",
    about:
      "AOD-9604 is a synthetic fragment of the C-terminus of human growth hormone. It was developed for its lipolytic effects without the broader anabolic GH actions.",
    benefits: ["Lipolysis", "Fat oxidation", "No IGF-1 spike"],
    sideEffects: ["Mild headache", "Hunger fluctuations"],
    splat: "Fasted morning dose, then walk for 30 minutes. Splat science: motion + fragment = fat shuttle. 🚶",
  },
  {
    id: "pt141",
    name: "PT-141",
    tag: "Wellness",
    tagline: "Bremelanotide, a melanocortin agonist studied for libido and arousal.",
    molecule: "MC4R / MC1R agonist",
    halfLife: "~2 hours",
    route: "Subcutaneous · Intranasal",
    timing: "As needed",
    color: "#F26B4A",
    tint: "tinted-coral",
    placeholder: "MC4R bloom",
    about:
      "PT-141 (bremelanotide) is a melanocortin receptor agonist FDA-approved for hypoactive sexual desire disorder in premenopausal women. It acts centrally rather than vascularly.",
    benefits: ["Libido", "Arousal response", "Mood lift"],
    sideEffects: ["Nausea", "Flushing", "Transient blood pressure rise"],
    splat: "Start at half a dose. Take it 45 min before — it's not instant. 🌹",
  },
  {
    id: "tymalpha",
    name: "Thymosin Alpha-1",
    tag: "Immune",
    tagline: "A 28-amino-acid thymic peptide studied for immune modulation.",
    molecule: "28-aa thymic peptide",
    halfLife: "~2 hours",
    route: "Subcutaneous",
    timing: "2x weekly",
    color: "#5FBF5F",
    tint: "tinted-green",
    placeholder: "T-cell line",
    about:
      "Thymosin Alpha-1 is a peptide originally isolated from the thymus. Approved in some countries as Zadaxin for hepatitis B/C and used adjunctively in immunocompromised states.",
    benefits: ["T-cell maturation", "Immune resilience", "Antiviral support"],
    sideEffects: ["Injection site soreness", "Brief fatigue"],
    splat: "Dose on waking and at night for the first month. Splat sees you through the sniffle season. 🛡️",
  },
  {
    id: "ll37",
    name: "LL-37",
    tag: "Antimicrobial",
    tagline: "A cathelicidin-derived antimicrobial peptide studied in chronic infection.",
    molecule: "37-aa cathelicidin",
    halfLife: "~1 hour",
    route: "Subcutaneous · Nebulized",
    timing: "Daily · short course",
    color: "#7FB8D6",
    tint: "tinted-sky",
    placeholder: "membrane breach",
    about:
      "LL-37 is the active fragment of human cathelicidin antimicrobial protein (hCAP-18). It exhibits broad-spectrum antimicrobial action and immunomodulatory roles in epithelial defense.",
    benefits: ["Antimicrobial action", "Wound healing", "Biofilm disruption"],
    sideEffects: ["Herxheimer-like reaction", "Inflammation flare"],
    splat: "Go slow with this one — die-off can hit hard. Hydrate, support liver, breathe deep. 🌬️",
  },
  {
    id: "kisspeptin",
    name: "Kisspeptin",
    tag: "Wellness",
    tagline: "A hypothalamic peptide that gates GnRH release and reproductive signaling.",
    molecule: "Kisspeptin-10 / -54",
    halfLife: "~30 minutes",
    route: "Subcutaneous",
    timing: "Pulsatile",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "GnRH pulse",
    about:
      "Kisspeptin is a hypothalamic peptide encoded by KISS1 that drives GnRH neuron activity. Research explores its role in puberty, fertility, and HPG-axis modulation.",
    benefits: ["LH/FSH support", "Libido modulation", "HPG axis tuning"],
    sideEffects: ["Mood swings", "Headache"],
    splat: "Pulsatile dosing matters here — clusters not constant. Talk to a doc who knows the axis. 🔁",
  },
  {
    id: "ss31",
    name: "SS-31",
    tag: "Mitochondrial",
    tagline: "Elamipretide, a tetrapeptide that targets the inner mitochondrial membrane.",
    molecule: "Aromatic-cationic tetrapeptide",
    halfLife: "~3 hours",
    route: "Subcutaneous",
    timing: "Daily",
    color: "#F2C94C",
    tint: "tinted-sun",
    placeholder: "cardiolipin",
    about:
      "SS-31 (elamipretide) selectively binds cardiolipin on the inner mitochondrial membrane. It's been studied in primary mitochondrial myopathy, dry AMD, and heart failure.",
    benefits: ["Mitochondrial function", "ATP output", "Antioxidant support"],
    sideEffects: ["Injection site reaction", "Mild headache"],
    splat: "Cardiolipin hugger! Pair with low-impact cardio days for a noticeable energy lift. ⚡",
  },
  {
    id: "humanin",
    name: "Humanin",
    tag: "Mitochondrial",
    tagline: "A mitochondrial-derived peptide with broad cytoprotective effects.",
    molecule: "24-aa mt-DNA encoded",
    halfLife: "~30 minutes",
    route: "Subcutaneous",
    timing: "Daily",
    color: "#5FBF5F",
    tint: "tinted-green",
    placeholder: "cytoprotect halo",
    about:
      "Humanin is a 24-amino-acid peptide encoded within mitochondrial DNA. Research explores its protective roles in neurons, beta cells, and cardiac tissue under stress.",
    benefits: ["Cytoprotection", "Insulin sensitization", "Neuroprotection"],
    sideEffects: ["Mild fatigue", "Injection site warmth"],
    splat: "Pairs nicely with Mots-C — same mitochondrial neighborhood, different jobs. 🏘️",
  },
  {
    id: "dihexa",
    name: "Dihexa",
    tag: "Cognitive",
    tagline: "An angiotensin IV analog studied for synaptogenesis and cognition.",
    molecule: "Hexapeptide (Ang IV analog)",
    halfLife: "~10 hours",
    route: "Oral · Transdermal",
    timing: "Daily",
    color: "#B9A7D6",
    tint: "tinted-lilac",
    placeholder: "dendritic bloom",
    about:
      "Dihexa is a small-molecule peptide derived from angiotensin IV, designed to be orally bioavailable. Preclinical work suggests it promotes synaptogenesis via the HGF/c-Met system.",
    benefits: ["Synaptogenesis", "Memory", "Learning"],
    sideEffects: ["Headache", "Insomnia if late dosed"],
    splat: "Morning with food. Pair with new learning — reading, drilling, language. 🧠",
  },
];

const ARTICLES = [
  {
    id: "amino-chain",
    topic: "basics",
    tag: "The Basics",
    title: "What 'peptide' actually means — and why length is the whole game.",
    excerpt:
      "A peptide is just a short chain of amino acids. But 'short' is the magic word — it's the hinge that decides whether a molecule acts like a signal or a structure.",
    readTime: "6 min",
    updated: "APR 17, 2026",
    art: "amino",
    tint: "tinted-sky",
    size: "big",
    body: [
      "Okay pal, let's start with the word itself. 🫧 A peptide is a short chain of amino acids linked by peptide bonds. That's it. A protein is the same thing, just longer. The line between them is fuzzy and depends on who you ask — most biochemists use roughly 50 residues as the cutoff, but insulin is 51 amino acids and we still call it a protein, while Thymosin Alpha-1 is 28 and we call it a peptide. It's a vibe, basically.",
      "Why does length matter so much? Because behavior changes with size. Short peptides (say, under 40 amino acids) diffuse easily, often survive mucous membranes, and can be synthesized cleanly on a solid-phase resin. They tend to act as signaling molecules — keys that fit receptors. Longer proteins fold into complex 3D shapes and tend to do structural or enzymatic work. When you inject GHK-Cu, a three-amino-acid tripeptide, you're handing the cell a tiny note. When your body makes collagen, it's building a wall.",
      "The peptide bond itself is a specific chemical handshake: the carboxyl group of one amino acid meets the amino group of the next, water leaves the party, and a stable amide bond forms. Your gut is pretty good at breaking these bonds — which is why almost every peptide on your shelf is injected, sprayed into a nostril, or (if they're clever about it, like oral semaglutide) paired with an absorption enhancer (Drucker, 2006).",
      "Side nerdery: the 20 standard amino acids each have their own personality. Some are charged, some are greasy, some are aromatic. The sequence determines the molecule's shape in water, and the shape determines which receptor it can tickle. Retatrutide is a 39-aa peptide engineered to fit three receptors at once — GLP-1, GIP, and glucagon — which is why Jastreboff et al. (2023) saw 22.1% weight reduction at 48 weeks on the 12 mg dose. Three keys on one keyring.",
      "A couple of common confusions worth clearing up: 'peptide' is not a drug class, it's a molecular shape. A peptide can be a hormone (insulin), a toxin (melittin), a signal (BPC-157), or an antimicrobial weapon (LL-37). 'Research peptide' is a marketing term, not a regulatory one. And length alone doesn't tell you if something is safe, effective, or even real — sequence, folding, purity, and dose all matter more.",
      "Next time someone calls peptides 'mini proteins,' you can smile politely. Close enough, but the game is in the length. Short chains move fast, bind tight, and usually leave the party within hours. That brevity is the feature, not a bug.",
    ],
    references: [
      { author: "Drucker DJ.", title: "The biology of incretin hormones", journal: "Cell Metab", year: 2006, url: "https://doi.org/10.1016/j.cmet.2006.01.004" },
      { author: "Jastreboff AM, et al.", title: "Triple-Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
    ],
  },
  {
    id: "receptors-by-blob",
    topic: "mechanism",
    tag: "Mechanism",
    title: "Receptors, explained by a blob.",
    excerpt:
      "Agonist, antagonist, partial agonist, biased agonist. Splat unpacks the vocabulary using a lock, a key, and a stubborn door.",
    readTime: "7 min",
    updated: "APR 10, 2026",
    art: "receptor",
    tint: "tinted-sky",
    size: "med",
    body: [
      "Imagine a door. The door is a receptor — a protein sticking out of a cell, waiting for the right visitor. The key is the ligand. When the key fits, something happens on the inside: a cascade of signals, a gene switches on, a muscle twitches, an appetite quiets. That's the whole vibe of peptide pharmacology, pal. 🫧",
      "An AGONIST is a key that opens the door. GLP-1 is the natural agonist for the GLP-1 receptor. Semaglutide is a synthetic agonist that sits in the same lock but stays longer — about 7 days of half-life instead of 2 minutes (Drucker, 2006). That stickiness is why one weekly injection can hold your appetite quieter for a full week.",
      "An ANTAGONIST is a key that fits the lock but refuses to turn it. It just sits there, blocking the real key. Naloxone (the opioid-overdose reversal) is a classic antagonist — it doesn't give you the effect, it prevents other molecules from giving you the effect. Most peptides you'll see are agonists, but antagonists matter in hormone modulation.",
      "Then there are PARTIAL AGONISTS — keys that turn the lock halfway. You get some effect, but not the full blast. And BIASED AGONISTS, which are wild: they open the door but only to one room. A receptor can trigger multiple downstream signals, and a biased agonist picks favorites. This is how researchers design drugs that keep the benefits while skipping some side effects.",
      "Tirzepatide is a fun case. It's a dual agonist — one molecule, two receptors (GIP and GLP-1). Jastreboff et al. (2022) in the SURMOUNT-1 trial reported 20.9% body weight loss at the 15 mg dose over 72 weeks. That's because hitting two keys at once produces a bigger downstream signal than either one alone. Retatrutide adds a third key (glucagon receptor), pushing the trial result to 22.1% at 48 weeks (Jastreboff et al., 2023).",
      "A quick word on RECEPTOR DESENSITIZATION. If you jam a key in a lock for long enough, the cell gets annoyed and pulls the lock off the wall. This is called internalization, and it's why some peptides lose potency with continuous dosing. Pulsatile dosing (kisspeptin, ipamorelin) exists partly to avoid this — you ring the doorbell and step back so the receptor doesn't sulk.",
      "So when someone says 'this peptide binds the MC4R receptor' — you know to ask: as an agonist or antagonist? How tightly? How long? Those three questions unlock 80% of the mechanism discussion.",
    ],
    references: [
      { author: "Drucker DJ.", title: "The biology of incretin hormones", journal: "Cell Metab", year: 2006, url: "https://doi.org/10.1016/j.cmet.2006.01.004" },
      { author: "Jastreboff AM, et al.", title: "Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1)", journal: "N Engl J Med", year: 2022, url: "https://doi.org/10.1056/NEJMoa2206038" },
      { author: "Jastreboff AM, et al.", title: "Triple-Hormone-Receptor Agonist Retatrutide for Obesity", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
    ],
  },
  {
    id: "half-life-schedule",
    topic: "mechanism",
    tag: "Mechanism",
    title: "Half-life: the number that decides your whole schedule.",
    excerpt:
      "Why Tesamorelin is daily and Retatrutide is weekly — explained without a pharmacokinetics degree. Here's the rule of five half-lives.",
    readTime: "8 min",
    updated: "APR 03, 2026",
    art: "halflife",
    tint: "tinted-sun",
    size: "big",
    body: [
      "Half-life is the most underrated number on a peptide label. It's the time it takes for half the dose in your bloodstream to be cleared out. Short half-life? You'll be dosing often. Long half-life? Once a week or less. The reason your Retatrutide is Sunday-only and your Tesamorelin is bedtime-every-night comes down to a ratio of hours vs. days.",
      "Tesamorelin, a GHRH analog, has a half-life of about 26 minutes (Falutz et al., 2007). Retatrutide clocks in around 6 days (Jastreboff et al., 2023). That's a roughly 300x difference in residence time, and it's why their dosing schedules look completely different. It's not because one is stronger — it's because one hangs around longer.",
      "The rule of thumb: after 5 half-lives, a drug is ~97% cleared from your system. So if you stop Tesamorelin, you're basically peptide-free in 2 hours. If you stop Retatrutide, it takes about a month to fully wash out. Steady-state concentration — the predictable plateau where input matches clearance — also takes about 5 half-lives of regular dosing to reach. For Retatrutide, that means real appetite effects don't fully stabilize until roughly week 4–5, even if you feel something at week 1.",
      "Short half-life peptides like Ipamorelin (~2 hours) are designed to mimic the body's pulsatile rhythm. Raun et al. (1998) showed Ipamorelin selectively triggers a short, clean GH pulse at the GHS-R1a receptor without the cortisol rise you'd see with older secretagogues. That brevity is the feature — your pituitary wants pulses, not a flood.",
      "Long half-life peptides use tricks to stick around. Semaglutide (~7 days) has a fatty acid chain attached that lets it bind serum albumin and hitchhike through your bloodstream. CJC-1295 with DAC (Drug Affinity Complex) does the same. Pegylation — adding polyethylene glycol — is another common trick; it's how your body stops recognizing the peptide as trash to throw out.",
      "Practical implications, pal: if you miss a Retatrutide dose by a day, don't panic — the molecule is still there, just slightly tapering. If you miss a Tesamorelin dose, you skip that night's pulse; no big deal, don't double up. Half-life dictates forgiveness. Longer half-lives are more forgiving to mistimed doses but less responsive to abrupt stops.",
      "So next time you see a half-life on a spec sheet, translate it: multiply by 5 for 'mostly cleared.' Multiply by 5 again for 'steady state reached.' You'll suddenly know why every schedule looks the way it looks.",
    ],
    references: [
      { author: "Falutz J, et al.", title: "Metabolic effects of a growth hormone-releasing factor in patients with HIV", journal: "N Engl J Med", year: 2007, url: "https://doi.org/10.1056/NEJMoa072375" },
      { author: "Raun K, et al.", title: "Ipamorelin, the first selective growth hormone secretagogue", journal: "Eur J Endocrinol", year: 1998, url: "https://doi.org/10.1530/eje.0.1390552" },
      { author: "Jastreboff AM, et al.", title: "Triple-Hormone-Receptor Agonist Retatrutide for Obesity", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
    ],
  },
  {
    id: "glp1-slow-food",
    topic: "mechanism",
    tag: "Mechanism",
    title: "Why GLP-1 drugs quiet hunger: the gut's slow-food signal.",
    excerpt:
      "GLP-1 is what your intestines release when carbs arrive. The modern drugs copy it, stretch it out, and change what 'full' feels like.",
    readTime: "6 min",
    updated: "APR 15, 2026",
    art: "routine",
    tint: "tinted-green",
    size: "med",
    body: [
      "Let's talk about why a weekly injection can make an ice cream cone suddenly uninteresting. It's not willpower — it's a hormone your gut already makes, turned up to eleven. 🫧",
      "GLP-1 (glucagon-like peptide-1) is released by L-cells in your small intestine within minutes of a meal hitting them, especially one with carbs. In a healthy body, GLP-1 does four main things: it tells your pancreas to release insulin, it tells your liver to slow glucose output, it slows gastric emptying (so food stays in your stomach longer), and it nudges central brain circuits in the hypothalamus and hindbrain that code for satiety (Drucker, 2006). Your intestine is not just plumbing — it's an endocrine orchestra.",
      "Endogenous GLP-1 has a half-life of about 2 minutes because an enzyme called DPP-4 clips it fast. So pharma said: let's make a version DPP-4 can't touch, and attach a fatty acid so it binds albumin and lingers. Enter semaglutide (~7 day half-life) and tirzepatide (~5 days). Wilding et al. (2021) in STEP-1 reported 14.9% body weight loss at 68 weeks with semaglutide 2.4 mg weekly versus 2.4% with placebo. That's not placebo noise — that's a hormone that was always there, finally given room to work.",
      "The subjective experience is a useful tell. People don't describe it as 'I'm fighting cravings.' They describe it as 'I just forgot to eat' or 'the bowl of pasta got boring two bites in.' That's gastric slowing plus central satiety signaling. The 'food noise' — the constant low background chatter about what to eat next — quiets down. Some people miss it. Most don't.",
      "Side effects are mostly the mechanism turned up too loud. Nausea at titration = gastric emptying is too slow. Constipation = gut motility is dialed back. Fatigue at dose changes = your energy balance is adjusting. Splat's rule: if it feels bad, you titrated too fast. Slow down, hydrate, and let week 2 pass before judging.",
      "GLP-1 alone is only part of the story. Tirzepatide adds GIP receptor agonism — another incretin — and gets to 20.9% weight loss at 15 mg (Jastreboff et al., 2022). Retatrutide adds glucagon on top and reached 22.1% at 48 weeks (Jastreboff et al., 2023). The gut keeps surprising us by being a pharmacy no one noticed.",
    ],
    references: [
      { author: "Drucker DJ.", title: "The biology of incretin hormones", journal: "Cell Metab", year: 2006, url: "https://doi.org/10.1016/j.cmet.2006.01.004" },
      { author: "Wilding JPH, et al.", title: "Once-Weekly Semaglutide in Adults with Overweight or Obesity (STEP 1)", journal: "N Engl J Med", year: 2021, url: "https://doi.org/10.1056/NEJMoa2032183" },
      { author: "Jastreboff AM, et al.", title: "Tirzepatide Once Weekly for the Treatment of Obesity", journal: "N Engl J Med", year: 2022, url: "https://doi.org/10.1056/NEJMoa2206038" },
      { author: "Jastreboff AM, et al.", title: "Retatrutide for Obesity — Phase 2 Trial", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
    ],
  },
  {
    id: "subq-vs-im",
    topic: "basics",
    tag: "The Basics",
    title: "SubQ vs IM: a small diagram with big consequences.",
    excerpt:
      "The difference between a 6mm needle under the skin and a 25mm needle into muscle is not just depth — it's a different absorption curve.",
    readTime: "4 min",
    updated: "APR 08, 2026",
    art: "subq",
    tint: "tinted-lilac",
    size: "med",
    body: [
      "Pal, meet your two favorite injection geographies. Subcutaneous (SubQ) is into the fatty layer under your skin — maybe 5–10mm deep. Intramuscular (IM) is past the fat, through fascia, into muscle — 20–25mm deep. The needle you pick depends on which party you're attending.",
      "Most peptides on your shelf are SubQ. Why? Because the subcutaneous layer is poorly vascularized, which means the peptide gets absorbed slowly and steadily over hours. That smooth curve is ideal for things like GLP-1 agonists, GHK-Cu, and Tesamorelin, where you want sustained exposure rather than a fast spike. Semaglutide, tirzepatide, and retatrutide are all SubQ, period.",
      "IM injections hit a richer blood supply, so absorption is faster and the peak is sharper. BPC-157 near a specific injury site is a common IM choice — Sikiric et al. (2014) reviewed its role in tendon and ligament healing via angiogenesis, and local delivery is often preferred. Some folks also use IM for TB-500. But for weekly metabolic peptides? SubQ is king.",
      "Technique: SubQ injections pinch an inch of skin, needle goes in at 45° or 90° depending on needle length, plunger pressed slow and steady over 5 seconds. IM is a dartboard throw into relaxed muscle at 90°, aspirate if you're old-school (modern guidance mostly says don't bother for SubQ), then inject. Always rotate sites — Strauss (2002) showed that rotation is the single biggest factor preventing lipohypertrophy in insulin users, and the same logic applies here.",
      "Common mistake: using a 25mm IM needle for a SubQ peptide. You'll deposit it deeper than intended, absorption curve changes, and you might hit a small vessel and bruise more. Use the right tool — a 29–31G insulin syringe with a 6–8mm needle covers 95% of your peptide life.",
    ],
    references: [
      { author: "Strauss K.", title: "A new needle-length for insulin injections (the 5mm needle)", journal: "Diabetes Care", year: 2002, url: "https://doi.org/10.2337/diacare.25.6.1133" },
      { author: "Sikiric P, et al.", title: "Stable gastric pentadecapeptide BPC 157 — novel therapy in gastrointestinal tract", journal: "Curr Pharm Des", year: 2014, url: "https://pubmed.ncbi.nlm.nih.gov/24559180/" },
    ],
  },
  {
    id: "storage-101",
    topic: "safety",
    tag: "Safety",
    title: "Storage 101: your freezer is lying to you.",
    excerpt:
      "Lyophilized peptides are forgiving. Reconstituted peptides are not. Here's what temperature actually does to the molecule.",
    readTime: "6 min",
    updated: "APR 12, 2026",
    art: "thermometer",
    tint: "tinted-coral",
    size: "med",
    body: [
      "Your freezer is probably running between -18°C and -20°C. Your fridge is probably between 2°C and 8°C. Your kitchen counter is between 19°C and 24°C. Each of those zones does something different to a peptide, and the difference between 'fine' and 'degraded trash' is sometimes a week. 🫧",
      "Lyophilized means freeze-dried. The peptide has had its water removed under vacuum, leaving a stable powder or cake. In this state most peptides are remarkably stable — Patel et al. (2017) reviewed protein stability in lyophilized form and found many survive years at -20°C with minimal aggregation. Some (like GHK-Cu and BPC-157) are even stable at room temperature for months in the vial before reconstitution, especially if your shipment was in a desiccant pouch.",
      "Reconstitution is the moment everything changes. Once you add bacteriostatic water (0.9% benzyl alcohol in sterile water), the peptide is in solution and degradation begins. The rate depends on the peptide — short ones like TB-500 fragment or GHK-Cu are more fragile than larger, engineered analogs like semaglutide. General rule: reconstituted peptides belong in the fridge (2–8°C) and used within 30 days, often 14 for more fragile ones.",
      "Freezing reconstituted peptides is a trap. Each freeze-thaw cycle creates ice crystals that shear protein structure. One freeze is survivable for most peptides. Three is asking for trouble. If you need longer storage, leave it lyophilized and reconstitute smaller amounts as you go.",
      "Heat is the fast killer. Leaving a reconstituted vial on the counter at 25°C for a few days can drop potency substantially (Patel et al., 2017). Light matters too — UV degrades aromatic amino acids like tryptophan. Amber vials aren't just aesthetic. If you suspect a vial went bad, signs include cloudiness, particulates, or a smell. Doesn't mean it's unsafe (usually just inactive), but it does mean you're injecting placebo at that point.",
      "Splat's fridge rules: label every vial with the reconstitution date. Keep peptides on a middle shelf (the door swings through 5°C variance — bad). Don't store them next to anything dripping. And when you travel, a hard cooler with a gel pack keeps things within spec for 24 hours easily. Your future self will thank you.",
    ],
    references: [
      { author: "Patel SM, et al.", title: "Lyophilized drug product cake appearance: what is acceptable?", journal: "J Pharm Sci", year: 2017, url: "https://doi.org/10.1016/j.xphs.2017.02.023" },
    ],
  },
  {
    id: "bruise-guide",
    topic: "safety",
    tag: "Safety",
    title: "'Is this bruise normal?' — a visual guide.",
    excerpt:
      "Sizes, colors, timelines. What to ignore, what to photograph, and the one shape that should send you to a doctor.",
    readTime: "5 min",
    updated: "APR 05, 2026",
    art: "bruise",
    tint: "tinted-coral",
    size: "med",
    body: [
      "Bruises after injections are a normal part of peptide life, pal. A small capillary gets nicked, red cells leak, your immune system cleans up over a week. The color timeline tells the story: red (day 0–1) → purple/blue (day 2–4) → green (day 5–7) → yellow-brown (day 7–10). If yours follows that arc and fades, that's healing, not harm.",
      "Size is the first thing to assess. A quarter-sized bruise (2–3 cm) is normal. A palm-sized bruise after a SubQ injection is not — that's a deeper vessel and usually means you hit subq tissue with too much force, drew the plunger too fast, or caught a small artery. Ice immediately, elevate if possible, and switch sites for a week.",
      "The shapes matter. A diffuse, oval bruise at the injection site = boring, fine. A raised, firm knot that doesn't soften in 48 hours = possible hematoma, watch it. Streaks radiating away from the injection site, warmth, or a growing red halo = possible infection. That last one is the doctor-call shape, pal. Don't guess.",
      "Certain peptides bruise more. Anything that affects platelet function or clotting, blood thinners, aspirin, even fish oil can enlarge normal bruising. Tesamorelin users often report more site reaction than GHK-Cu folks. Injection angle matters: too shallow and you're in dermis (hurts more, bruises ugly); 90° into pinched SubQ fat is smoothest.",
      "Prevention checklist: smaller gauge needle (29–31G for SubQ), warm the vial to room temp, inject slowly (5 seconds for 0.5 mL), and don't rub afterward — press firmly for 10 seconds instead. Rotate sites using Strauss's rotation principle (Strauss, 2002) to give each site at least 2 weeks of recovery.",
      "When to actually worry: fever, spreading redness, pus, a bruise that keeps enlarging after 24 hours, or pain that worsens instead of improves. Those symptoms are not normal peptide life. The rest? Usually just a little capillary drama. Color's not great, pride's bruised, body's fine.",
    ],
    references: [
      { author: "Strauss K.", title: "A new needle-length for insulin injections (the 5mm needle)", journal: "Diabetes Care", year: 2002, url: "https://doi.org/10.2337/diacare.25.6.1133" },
    ],
  },
  {
    id: "rotate-sites",
    topic: "safety",
    tag: "Safety",
    title: "Rotating injection sites without a spreadsheet.",
    excerpt:
      "Four zones, a simple rhythm, and the reason lipohypertrophy is the thing you most want to prevent.",
    readTime: "4 min",
    updated: "MAR 28, 2026",
    art: "sites",
    tint: "tinted-lilac",
    size: "small",
    body: [
      "If you inject in the same square inch every time, your body notices. After a few months you may feel a firm lump called lipohypertrophy — fatty tissue thickened by repeated injections. It's not dangerous but it absorbs peptides erratically, so your doses get weird. Strauss (2002) showed that site rotation is the single most effective prevention.",
      "Splat's rhythm: four zones, four weeks. Week 1 = upper-left abdomen (2 inches from the belly button outward). Week 2 = upper-right. Week 3 = lower-left. Week 4 = lower-right. Within each zone, rotate to a new spot each day — a grid of four spots gives you 16 locations per month before you revisit any of them.",
      "Thighs are zone two if you want more room. Upper outer thigh, at least 4 fingers above the knee, is reliable SubQ territory. The abdomen absorbs fastest, the thigh medium, the upper arm slowest. Some people deliberately use their slower sites for bedtime doses and their faster sites for morning ones — not strictly necessary, but nerdy-cute.",
      "Avoid: scar tissue, stretch marks, moles, the 2-inch belly-button exclusion zone, and any spot that's visibly lumpy from past injections. If you feel a knot, give that spot 6 weeks off.",
      "The spreadsheet-free trick: put a Post-it on your fridge with 4 zones and tick them off. Or use the dashboard's site tracker. It doesn't need to be elegant. It just needs to not be 'the same spot every Sunday for a year.'",
    ],
    references: [
      { author: "Strauss K.", title: "A new needle-length for insulin injections (the 5mm needle)", journal: "Diabetes Care", year: 2002, url: "https://doi.org/10.2337/diacare.25.6.1133" },
    ],
  },
  {
    id: "stacking-rules",
    topic: "stacks",
    tag: "Stacks",
    title: "Stacking, without stacking the deck against yourself.",
    excerpt:
      "Four rules Splat uses when evaluating someone's 5-peptide protocol. Rule one: don't. Rule two: if you must, start with two.",
    readTime: "8 min",
    updated: "APR 14, 2026",
    art: "stacks",
    tint: "tinted-green",
    size: "big",
    body: [
      "Every few weeks someone shows me their protocol and it's seven peptides, three supplements, two nootropics, and a prayer. Pal, I love you. But also: how will you ever know which one is doing what? 🫧",
      "Rule 1: DON'T, if you can avoid it. The biggest mistake beginners make is stacking out of fear of missing out. Every peptide in your stack should earn its spot with a specific goal and a measurable outcome. If you can't tell me what you'd track to know if it's working, cut it.",
      "Rule 2: IF YOU MUST, START WITH TWO. Monotherapy is how you learn a molecule's fingerprint — its side effect curve, its response latency, its dose sweet spot. Once you know one peptide solo, adding a second is an experiment with a control arm in your memory. Adding a third is a leap of faith.",
      "Rule 3: KNOW THE MECHANISM OVERLAP. CJC-1295 + Ipamorelin is a classic stack because one is a GHRH analog and the other is a ghrelin mimetic — they hit different receptors to produce a synergistic GH pulse (Raun et al., 1998). Pairing two GLP-1 agonists is not synergistic, it's redundant and potentially dangerous. GHK-Cu + BPC-157 for recovery is fine because they work through totally different pathways (copper-mediated collagen signaling vs angiogenesis). Mechanism-check every pair.",
      "Rule 4: SPACE THE INTRODUCTIONS. Add one peptide at a time, 2–4 weeks apart. If you add everything at once, any side effect is a mystery. If you stage introductions, the bad actor reveals itself. This is boring, which is why nobody does it, which is why nobody knows what's working.",
      "A few combos that actually have evidence: Tesamorelin + exercise for visceral fat (Falutz et al., 2007). Semaglutide + resistance training for lean mass preservation during weight loss. GHK-Cu topical + oral collagen for skin quality.",
      "A few combos to avoid unless you really know what you're doing: Retatrutide + aggressive GH-secretagogue stacks (different article), any two peptides that both cause hypoglycemia, or anything that adds a fifth peptide when you haven't stabilized the first four.",
      "The best-read protocols tend to be small. 2–3 peptides, 2–3 months between changes, 1 notebook tracking how you feel. Splat approves of small, curious experiments. He side-eyes 8-peptide death-stacks.",
    ],
    references: [
      { author: "Raun K, et al.", title: "Ipamorelin, the first selective growth hormone secretagogue", journal: "Eur J Endocrinol", year: 1998, url: "https://doi.org/10.1530/eje.0.1390552" },
      { author: "Falutz J, et al.", title: "Metabolic effects of a growth hormone-releasing factor", journal: "N Engl J Med", year: 2007, url: "https://doi.org/10.1056/NEJMoa072375" },
    ],
  },
  {
    id: "reta-gh-stack-warning",
    topic: "stacks",
    tag: "Stacks",
    title: "Why most Retatrutide + GH-secretagogue stacks are a bad idea.",
    excerpt:
      "The appeal is obvious — burn fat faster, preserve muscle. The pharmacology quietly disagrees. Here's what the data says.",
    readTime: "7 min",
    updated: "APR 01, 2026",
    art: "faq",
    tint: "tinted-sun",
    size: "med",
    body: [
      "The internet loves this stack: Retatrutide for appetite suppression, plus CJC-1295/Ipamorelin for muscle sparing. On paper it's elegant. In reality, pal, it's a collision between two hormones that are normally supposed to take turns.",
      "GLP-1 agonism suppresses glucagon (lowering hepatic glucose output) and slows gastric emptying. GH secretagogues push the pituitary to pulse GH, which raises hepatic glucose output (via gluconeogenesis) and is counter-regulatory to insulin. So you're pushing the gas and the brakes on glucose at the same time. Some people tolerate this fine; some get fasting glucose fluctuations that confuse every biomarker.",
      "The second issue is cumulative GI side effects. Retatrutide, especially during titration, causes nausea that Jastreboff et al. (2023) noted in a meaningful fraction of subjects at higher doses. Ipamorelin transiently increases hunger (it's a ghrelin mimetic). The result is often a weird push-pull: you're not hungry from the GLP-1, then you are from the ghrelin, then your stomach is slow so eating feels bad. The subjective experience is chaotic.",
      "Third: you can't easily measure whether the GH side of the stack is doing anything. IGF-1 should rise with GH-secretagogue use, but Retatrutide's metabolic changes (weight loss, altered insulin sensitivity) independently shift IGF-1 binding protein dynamics. So your IGF-1 levels become hard to interpret. You're flying blind.",
      "What actually works better: run Retatrutide alone for 12–16 weeks, titrate cleanly, stabilize at a dose. THEN assess whether muscle loss is actually happening (DEXA, grip strength, lift numbers) — most people preserve muscle fine on GLP-1 drugs if they're eating enough protein and lifting. If after 4 months you're genuinely losing lean mass, then and only then consider adding a low-dose GH-secretagogue stack, after washout-capable.",
      "The research that does exist on GLP-1 + GH axis is mostly in animal models or small mechanistic studies, and results are mixed. We don't have a SURMOUNT-scale trial combining these. Splat says: if you absolutely need to do this, time the doses 12 hours apart (GLP-1 morning, secretagogue bedtime) and pull bloods every 4 weeks. But really — just don't, pal.",
    ],
    references: [
      { author: "Jastreboff AM, et al.", title: "Triple-Hormone-Receptor Agonist Retatrutide for Obesity", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
      { author: "Raun K, et al.", title: "Ipamorelin, the first selective growth hormone secretagogue", journal: "Eur J Endocrinol", year: 1998, url: "https://doi.org/10.1530/eje.0.1390552" },
    ],
  },
  {
    id: "ghkcu-skin-8wk",
    topic: "protocols",
    tag: "Protocols",
    title: "The 8-week GHK-Cu skin protocol Splat likes.",
    excerpt:
      "Topical pairs with subq. Morning pairs with evening. And weeks 1–2 are where most people quit before the results arrive.",
    readTime: "6 min",
    updated: "APR 11, 2026",
    art: "skinproto",
    tint: "tinted-sun",
    size: "med",
    body: [
      "GHK-Cu is the little copper tripeptide (Gly-His-Lys-Cu²⁺) that your skin makes naturally, except it stops making enough of it around your 40s. Pickart & Margolina (2018) review its role in collagen synthesis, fibroblast activation, and antioxidant response in the dermis. The research-grade version, applied correctly for 8 weeks, is where most people see a real change in skin feel.",
      "The protocol Splat runs: 8 weeks, topical AM + SubQ 2x/week, no breaks. Week-by-week:",
      "WEEKS 1–2 (the quiet weeks): Topical GHK-Cu, 2% serum, pea-sized dab on cleansed skin every morning. SPF over it — copper peptides don't block UV and UV destroys collagen faster than any peptide builds it. Most people see nothing yet. This is where people give up. Don't. Fibroblasts are still checking their email.",
      "WEEKS 3–4 (texture shift): Same topical, but add 1–2 mg SubQ twice weekly (Sunday and Wednesday is a nice rhythm) into abdominal fat. You may notice skin feels slightly more elastic, makeup goes on smoother, and existing small irritations fade faster.",
      "WEEKS 5–6 (the obvious weeks): This is where most people start getting unsolicited 'did you do something?' comments. Continue the routine unchanged. Pickart & Margolina (2018) note that collagen type I expression typically becomes measurable at this timepoint in vitro, which matches the real-world experience fairly well.",
      "WEEKS 7–8 (consolidation): Final two weeks of the same. Then take 2–4 weeks off before running it again. Your skin needs to use what you've built before another cycle helps. Bonus: pair with adequate dietary protein (at least 1.2 g/kg body weight) and vitamin C — both are required co-factors for collagen synthesis. Copper peptides alone don't build collagen out of nothing, pal.",
      "A few notes: GHK-Cu is stable at room temperature as a lyophilized powder, but once reconstituted, keep it refrigerated and use within 30 days. The faint blue color is normal — that's the copper ion. The topical formulation shouldn't oxidize if stored out of light. If it smells metallic, toss it.",
    ],
    references: [
      { author: "Pickart L, Margolina A.", title: "Regenerative and Protective Actions of the GHK-Cu Peptide", journal: "Int J Mol Sci", year: 2018, url: "https://doi.org/10.3390/ijms19071987" },
    ],
  },
  {
    id: "motsc-mitochondria",
    topic: "protocols",
    tag: "Protocols",
    title: "Mitochondria, exercise, and the puzzle of Mots-C.",
    excerpt:
      "A 16-amino-acid peptide encoded inside your mitochondrial DNA, doing something suspiciously similar to exercise. Here's what we know.",
    readTime: "9 min",
    updated: "APR 16, 2026",
    art: "mitoflex",
    tint: "tinted-coral",
    size: "med",
    body: [
      "Mots-C is one of the weirder molecules in the peptide world, pal. It's encoded not in your nuclear DNA, but inside the ring-shaped genome of your mitochondria. Lee et al. (2015) were the first to characterize it as a mitochondrial-derived peptide (MDP) that circulates in blood and modulates metabolism at a whole-body level. That paper was the 'wait, what?' moment for the field.",
      "What does it do? Lee et al. (2015) showed Mots-C acts on AMPK signaling — the same cellular energy sensor that exercise, caloric restriction, and metformin all tweak. In mouse models, exogenous Mots-C improved insulin sensitivity, promoted fatty acid oxidation, and made high-fat-diet mice behave more like lean controls. In humans, circulating Mots-C is higher in athletes than in sedentary people, and higher after acute exercise. It's being called an 'exercise mimetic' — a molecule that partially imitates the metabolic signal of working out.",
      "The protocol research peptide users tend to run: 10 mg SubQ 3x/week (Monday, Wednesday, Friday), for 8–12 weeks. Some stack it post-workout for the theoretical synergy with endogenous AMPK activation. No large human trials yet — the field is mostly preclinical plus small mechanistic studies, so take claims with appropriate tempering.",
      "What does it feel like? Subjectively, most people report steadier energy and slightly better recovery from hard training sessions. It is NOT a stimulant. If you feel 'energy' from injecting it, that's probably the placebo effect giving you a hype — or mild water retention masquerading as fullness. The real effects are visible in blood work (fasting glucose trending down, lipid profile trending better) rather than in how Tuesday morning feels.",
      "The mitochondrial theory of aging says cellular energy decline is a root cause of many age-related conditions. If Mots-C genuinely restores mitochondrial signaling, it could matter for healthspan. Related mitochondrial peptides like SS-31 (elamipretide) bind cardiolipin on the inner mitochondrial membrane (Szeto, 2014) and are in clinical trials for primary mitochondrial myopathy. We're in an era where mitochondria are being taken seriously as a drug target, not just organelles.",
      "Splat's take: Mots-C is one of the more scientifically interesting peptides on your shelf, but we're years away from the SURMOUNT-scale data we have for GLP-1s. Treat it as a curiosity with promising mechanism rather than a known quantity. Track your bloods, keep your actual exercise going (nothing beats a real squat for AMPK activation), and read the next 3 papers that come out on this molecule.",
    ],
    references: [
      { author: "Lee C, et al.", title: "The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis", journal: "Cell Metab", year: 2015, url: "https://doi.org/10.1016/j.cmet.2015.02.009" },
      { author: "Szeto HH.", title: "First-in-class cardiolipin-protective compound as a therapeutic agent", journal: "Br J Pharmacol", year: 2014, url: "https://doi.org/10.1111/bph.12461" },
    ],
  },
  {
    id: "splat-weekly-faq",
    topic: "faq",
    tag: "FAQ",
    title: "Five questions Splat got this week.",
    excerpt:
      "Bruising, timing, stacking, freezer deaths, and one very specific question about ginger tea. Here are the answers.",
    readTime: "7 min",
    updated: "APR 18, 2026",
    art: "qa",
    tint: "tinted-coral",
    size: "big",
    body: [
      "Pull up a chair, pal. Here are the 5 questions that showed up in my inbox this week, in order of how many times I got them. 🫧",
      "Q1: 'Why is my Retatrutide bruising so much more than my Semaglutide?' — A: Different vial concentrations, different volumes injected, and possibly a different needle. Retatrutide at higher doses often means more volume (1.0+ mL vs 0.5 mL), which means more tissue displacement and more bruise potential. Switch to a 29–31G insulin needle, pinch a good SubQ fold, inject slow, and press firmly (don't rub) afterward. If you're on aspirin or fish oil, expect 20-30% more bruising.",
      "Q2: 'Can I freeze my reconstituted peptides for later?' — A: Once, if you must. Each freeze-thaw cycle creates ice crystals that damage peptide structure (Patel et al., 2017). More than one cycle and you're injecting peptide fragments, not peptides. Better plan: reconstitute smaller batches from the lyophilized powder and keep the rest dry in the fridge or freezer.",
      "Q3: 'Is morning or evening better for Tesamorelin?' — A: Evening, by design. Tesamorelin is a GHRH analog (~26 min half-life) and your natural GH pulses are strongest during deep sleep. Injecting 30 minutes before bed aligns the peptide pulse with your endogenous circadian pulse, amplifying it (Falutz et al., 2007). Morning dosing works but misses the synergy.",
      "Q4: 'I'm running GHK-Cu topical and SubQ — am I doubling up?' — A: Sort of, but not harmfully. Topical GHK-Cu mostly acts locally in the dermis, while SubQ gives you systemic exposure that also reaches skin fibroblasts via blood. They stack fine for skin-focused protocols (Pickart & Margolina, 2018). The risk is cost, not safety.",
      "Q5: 'Why did you tell someone to drink ginger tea with MT-2?' — A: Bremelanotide/MT-2 causes nausea in a lot of people during the loading phase. Ginger is an evidence-backed anti-nausea adjunct (the literature is mostly for pregnancy and chemo, but the mechanism generalizes). A warm mug of ginger tea 30 minutes post-injection, paired with starting at half the planned dose, helps most people cross the loading phase without quitting. That's it. It's not prescription-level advice. It's 'Splat thinks you'll feel less awful if you do this.'",
      "Got a question? Splat reads every DM. Your question might end up in next week's FAQ (anonymous, pal, always).",
    ],
    references: [
      { author: "Patel SM, et al.", title: "Lyophilized drug product stability", journal: "J Pharm Sci", year: 2017, url: "https://doi.org/10.1016/j.xphs.2017.02.023" },
      { author: "Falutz J, et al.", title: "Metabolic effects of a growth hormone-releasing factor", journal: "N Engl J Med", year: 2007, url: "https://doi.org/10.1056/NEJMoa072375" },
      { author: "Pickart L, Margolina A.", title: "Regenerative and Protective Actions of GHK-Cu", journal: "Int J Mol Sci", year: 2018, url: "https://doi.org/10.3390/ijms19071987" },
    ],
  },
  {
    id: "reta-week2-nausea",
    topic: "faq",
    tag: "FAQ",
    title: "Why your Retatrutide nausea probably peaks at week 2.",
    excerpt:
      "The body adapts to GLP-1-class agonists along a pretty predictable curve. Here's the shape, the mechanism, and when to worry.",
    readTime: "6 min",
    updated: "APR 17, 2026",
    art: "titration",
    tint: "tinted-green",
    size: "med",
    body: [
      "If you're in week 2 of a titration and thinking 'this is never going to stop,' pal, I promise it will. The curve is boringly predictable across GLP-1, GLP-1/GIP, and triple-agonist peptides.",
      "Here's why week 2 is the worst: gastric emptying slowing is both acute (it kicks in within a day) and cumulative (it intensifies over about 10–14 days as you reach pseudo-steady-state on the initial dose). On the second dose, you're adding peptide on top of a system that hasn't fully re-equilibrated. Days 8–14 is when most people report peak nausea, food aversion, and reflux. Jastreboff et al. (2023) documented dose-dependent GI side effects in the retatrutide trial with most events mild-to-moderate and concentrated in the first 4 weeks.",
      "Starting week 3, two things happen. First, the vagal afferents that send 'I'm too full, stop eating' signals desensitize slightly — not enough to kill appetite suppression, but enough to take the edge off the nausea. Second, you've learned how to eat with slow gastric emptying: smaller portions, lower fat content, more protein, less carbonation, earlier cutoff before bedtime.",
      "The thing that trips people up: titration escalation. If you dose-step up during week 2, you reset the clock on adaptation and experience another peak. That's why the Retatrutide and Tirzepatide clinical protocols have 4-week minimum intervals between dose steps (Jastreboff et al., 2022). Going faster because 'it's fine' is a classic way to make week 3 feel like week 1 again.",
      "What actually helps during the bad week: small meals (6 mini-meals > 3 big ones), low-fat protein as the backbone (cottage cheese, greek yogurt, fish), ginger tea or ginger chews, room-temperature water (cold water cramps a slow stomach), and sleeping with your head slightly elevated. Walking 10 minutes after eating is unreasonably effective.",
      "Red flags during week 2 that are NOT just normal nausea: vomiting more than twice in 24 hours, inability to keep fluids down for 12+ hours, severe upper-right abdominal pain (gallbladder), or signs of dehydration. Those are call-your-doctor symptoms. Everything else? Pal, you're in the tunnel. The light is week 3. 🫧",
    ],
    references: [
      { author: "Jastreboff AM, et al.", title: "Tirzepatide Once Weekly for the Treatment of Obesity", journal: "N Engl J Med", year: 2022, url: "https://doi.org/10.1056/NEJMoa2206038" },
      { author: "Jastreboff AM, et al.", title: "Retatrutide for Obesity — Phase 2 Trial", journal: "N Engl J Med", year: 2023, url: "https://doi.org/10.1056/NEJMoa2301972" },
    ],
  },
];

const BIOMARKERS = [
  { lbl: "Weight", val: "168.4", unit: "lb", delta: "↓ 2.1 lb / 2w", dir: "down", chart: [20,19,18,18,17,16,15,14,14,13] },
  { lbl: "Resting HR", val: "58", unit: "bpm", delta: "↓ 3 / 2w", dir: "down", chart: [22,21,22,20,19,20,18,17,18,17] },
  { lbl: "HRV", val: "74", unit: "ms", delta: "↑ 8 / 2w", dir: "up", chart: [10,12,13,15,14,17,18,20,22,24] },
  { lbl: "Fasting glucose", val: "89", unit: "mg/dL", delta: "stable", dir: "warn", chart: [14,16,15,14,15,14,15,14,15,14] },
  { lbl: "Sleep score", val: "88", unit: "/100", delta: "↑ 6 / 2w", dir: "up", chart: [16,15,17,18,19,20,21,22,22,24] },
  { lbl: "Body fat", val: "18.2", unit: "%", delta: "↓ 1.4%", dir: "down", chart: [24,23,22,22,21,20,19,18,17,17] },
];

Object.assign(window, { PEPTIDES, ARTICLES, BIOMARKERS });