The plain-English peptide encyclopedia
Every peptide, explained straight.
Hair, muscle, weight loss, sleep, sex, longevity — what actually works, what’s hype, and what’s just not worth the needle. No products, no sales pitch, no BS.
35 peptides, explained36 straight-talking guides100% independent — nothing for sale
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01Legal & Safety
Is BPC-157 legal — or are you rolling the dice?
02Weight LossOzempic vs Zepbound: which one actually wins?
03HairThe best peptide for hair growth (and the hype to skip)
04MusclePeptides for muscle: what works vs what's banned
05LibidoPeptides for a better sex life, explained without the cringe
06Buyer BewareHow to spot a fake peptide before you get burned
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Every peptide, and what it’s used for
All 38 peptides in one place. Tap any row for the full plain-English breakdown — what it is, what the research really shows, and whether it’s safe and legal.
PeptideWhat it’s used forType
AOD-9604Metabolic & WeightFat loss / weight (development stalled after weak trial results)ResearchArgirelineSkin & CosmeticThe look of softer expression linesCosmeticBPC-157Healing & RecoveryTissue, tendon, and gut healingResearchCagrilintideMetabolic & WeightWeight loss and appetite control (often tested with semaglutide as 'CagriSema')ResearchCerebrolysinFocus & MoodStroke, dementia, and traumatic brain injuryResearchCJC-1295Growth Hormone & MuscleRaising growth hormone / IGF-1, body composition, sleepResearchDSIPFocus & MoodSleep, and the body's stress and hormone systemsResearchEpitalonLongevity & CellularAgeing, telomeres, and sleepResearchFollistatin-344Growth Hormone & MuscleBlocking myostatin to allow more muscle growthResearchGHK-Cu (Copper Peptides)Skin & CosmeticThe look of firmer, smoother skinCosmeticGHRP-2Growth Hormone & MuscleTriggering growth hormone releaseResearchGHRP-6Growth Hormone & MuscleTriggering growth hormone releaseResearchGonadorelinSexual Health & LibidoFertility, hormone testing/diagnosis, and supporting the body's own sex-hormone signalsApprovedHCGGrowth Hormone & MuscleFertility treatment; certain male hormonal problemsApprovedHexarelinGrowth Hormone & MuscleTriggering growth hormone releaseResearchHumaninLongevity & CellularAgeing, brain protection, and how the body handles energyResearchIGF-1 LR3Growth Hormone & MuscleMuscle growth and cell growthResearchIpamorelinGrowth Hormone & MuscleGrowth hormone release, body composition, recovery, sleepResearchKisspeptinSexual Health & LibidoLibido, arousal, and fertilityResearchKPVHealing & RecoveryCalming inflammation, gut inflammation (IBD), and immune modulationResearchLarazotideHealing & RecoveryTightening the gut lining ('leaky gut' / tight junctions)ResearchLL-37Healing & RecoveryFighting microbes and helping wounds healResearchMatrixylSkin & CosmeticThe look of fine lines and firmnessCosmeticMelanotan-2Sexual Health & LibidoTanning and libidoResearchMOTS-cMetabolic & WeightMetabolism, insulin sensitivity, exercise / energyResearchNAD+Longevity & CellularCellular energy, ageing, and DNA repairSupplementOxytocinSexual Health & LibidoLabor and breastfeeding (approved); bonding, anxiety, and social connection (research/off-label)ApprovedPT-141Sexual Health & LibidoLow sexual desire and arousalApprovedRetatrutideMetabolic & WeightObesity / weight loss and type 2 diabetesResearchSelankFocus & MoodAnxiety, stress, and calm focusResearchSemaglutideMetabolic & WeightType 2 diabetes and chronic (long-term) weight managementApprovedSemaxFocus & MoodFocus, memory, neuroprotection, and stroke recoveryResearchSermorelinGrowth Hormone & MusclePrompting the body to release its own growth hormoneApprovedSS-31Longevity & CellularMitochondrial disease, heart and eye conditions, cellular energyResearchTB-500Healing & RecoveryTissue repair, wound healing, and injury recoveryResearchTesamorelinMetabolic & WeightReducing excess belly fat in HIV-associated lipodystrophyApprovedThymosin Alpha-1Healing & RecoverySupporting and balancing the immune systemResearchTirzepatideMetabolic & WeightType 2 diabetes and weight managementApprovedIndependent
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Peptides are confusing and full of hype. We explain them in plain words, keep skincare peptides separate from the injectable kind, and help you tell what’s real from what’s marketing.
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