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Peptides
Every peptide we cover, in one place —sorted into eight research categories so you can jump straight to the ones you came for. Each one, in plain English: what it is, how it works, what the evidence actually shows, and the honest risks. Pick a category to start.
8 categories
- Incretin & metabolic
The weight-loss and blood-sugar peptides most people come here for — semaglutide, tirzepatide, retatrutide and the rest of the GLP-1 family.
- Healing & recovery
The peptides people reach for to heal a cranky tendon, shoulder or gut — BPC-157, TB-500, GHK-Cu and the 'Wolverine stack.' Heavy on animal data so far.
- Growth-hormone secretagogues
Peptides that nudge your body into making more of its own growth hormone — ipamorelin, CJC-1295, sermorelin, MK-677 — for sleep, recovery and recomposition.
- Cosmetic & skin
The skin, anti-aging and hair peptides — GHK-Cu, argireline, matrixyl — and which actually firm skin and soften lines versus which are mostly marketing.
- Nootropic & mental-health
The focus, mood and anxiety peptides — Semax, Selank, cerebrolysin — used for clean, non-jittery cognition, though most human research stayed in Russia.
- Melanocortins
The tanning and libido peptides — Melanotan I and II, PT-141 — plus the FDA-approved drugs in the family. The real effects and the honest risks.
- Longevity & mitochondrial
The anti-aging and mitochondrial peptides — Epitalon, MOTS-c, SS-31 — the biggest claims in this reference, sitting on its thinnest human evidence.
- Immune & antimicrobial
The immune and antimicrobial peptides — Thymosin Alpha-1's real human trials next to research-chem names like LL-37 and KPV that are mostly preclinical.