Consult FDA-Approved
Semaglutide
Wegovy® / Ozempic®
GLP-1 receptor agonist — mimics the incretin hormone GLP-1, reducing appetite centrally, slowing gastric…
Evidence-graded library
The Peptide Library
Every entry carries an evidence grade so you know exactly where the science stands. Research-use compounds can be purchased directly; clinical and prescription-tier compounds are gated behind a consultation.
⚠ Read first: Research-use-only peptides are sold for laboratory research and are
not for human consumption. Nothing here is medical advice. Work with a licensed physician
and a compounding pharmacy for any therapeutic use.
How we grade the evidence
Popularity is not proof. These grades are applied consistently across the whole library.
FDA-Approved
Approved by the FDA for at least one indication. Extensive human safety data.
Human-Trialed
Published human clinical trials exist, but no FDA approval for the relevant use.
Approved Abroad
Regulatory approval in other countries but not in the US.
Preclinical
Animal or in-vitro studies only. Promising but unproven in humans.
Anecdotal
User reports and practitioner experience only. No controlled studies.
Browse the library
Consult 
Consult FDA-Approved
Tirzepatide
Mounjaro® / Zepbound®
Dual GIP/GLP-1 receptor agonist — activates both incretin pathways for enhanced metabolic effect beyond G…
Consult FDA-Approved
Liraglutide
Saxenda® / Victoza®
GLP-1 receptor agonist — same class as semaglutide but shorter half-life requiring daily dosing.
Research-use Human-Trialed
Retatrutide
LY3437943 (Eli Lilly)
Triple agonist (GLP-1 + GIP + glucagon receptor) — activates all three incretin/metabolic pathways simult…
Consult FDA-Approved WADA
Tesamorelin
Egrifta SV®
Growth hormone-releasing hormone (GHRH) analog — stimulates pituitary GH secretion, preserving pulsatile…
Consult FDA-Approved
Bremelanotide
PT-141 / Vyleesi®
Melanocortin-4 receptor agonist — acts centrally on hypothalamic pathways involved in sexual arousal, dis…
Consult FDA-Approved WADA
Testosterone (TRT)
Cypionate / Enanthate / Gel
Exogenous testosterone — a steroid hormone, not a peptide, but commonly discussed alongside peptide proto…
Consult FDA-Approved WADA
Sermorelin
Geref® (discontinued)
GHRH analog (residues 1-29) — stimulates endogenous GH release from the pituitary, maintaining physiologi…
Research-use Preclinical WADA
BPC-157
Body Protection Compound-157
Derived from gastric juice protein BPC. Proposed mechanisms include upregulation of growth factor recepto…
Research-use Preclinical WADA
TB-500
Thymosin Beta-4 fragment
Synthetic fragment of thymosin beta-4 — promotes cell migration, angiogenesis, and anti-inflammatory effe…
Research-use Human-Trialed
GHK-Cu
Copper peptide GHK-Cu
Naturally occurring tripeptide-copper complex. Stimulates collagen synthesis, glycosaminoglycan productio…
Research-use Human-Trialed WADA
CJC-1295
CJC-1295 / with DAC
Modified GHRH analog with Drug Affinity Complex (DAC) extending half-life to 6–8 days. Stimulates sustain…
Research-use Human-Trialed WADA
Ipamorelin
Ipamorelin acetate
Selective growth hormone secretagogue — activates ghrelin receptor (GHS-R1a) to stimulate GH release with…
Research-use Human-Trialed WADA
MK-677
Ibutamoren
Non-peptide ghrelin receptor agonist — oral GH secretagogue that increases GH and IGF-1 without injection…
Research-use Preclinical
Melanotan II
MT-II
Non-selective melanocortin receptor agonist — activates MC1R (pigmentation), MC3R/MC4R (sexual function,…
Research-use Approved Abroad
Thymosin Alpha-1
Tα1 / Zadaxin®
Thymic peptide — enhances T-cell maturation, dendritic cell function, and NK cell activity. Modulates Th1…
Research-use Preclinical
Epitalon
Epithalon / Epithalone
Synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied by Khavinson. Proposed to activate telomerase in somatic…
Research-use Preclinical WADA
MOTS-c
Mitochondrial-derived peptide
A 16-amino-acid mitochondrial-derived peptide encoded within the mtDNA 12S rRNA. It signals from the mito…
Research-use Approved Abroad
Selank
TP-7 / Selanc
Synthetic analog of immunoglobulin G fragment (tuftsin) — modulates serotonin, dopamine, and BDNF express…
Research-use Approved Abroad
Semax
ACTH(4-7)-PGP
Synthetic analog of ACTH(4-10) — enhances BDNF and NGF expression, modulates dopamine and serotonin syste…