The directory

Every peptide, filtered by what matters

Not by hype, by evidence. Filter the full catalogue by your goal, how strong the evidence is, whether it’s approved, and whether it’s banned in sport.

Goal
All goalsWeight lossMuscle growthHealing & recoverySkin & beautyLongevityBrain & cognitiveSexual healthImmune supportGut healthSleep & stressMetabolic
GradeABCD
StatusApprovedIn human trialsResearch-only
28 of 28 peptides
Grade keyA Approved · strong human RCTsB Approved or near-approved · moderate evidenceC Some human data · limited or mixedD Preclinical / animal onlyHow we grade →
A
Semaglutide
Approved GLP-1 drug with robust human trials for weight loss and diabetes.
Weight lossMetabolicApproved
A
Tirzepatide
Approved dual GLP-1/GIP agonist; strongest approved weight-loss data per mg.
Weight lossMetabolicApproved
A
Liraglutide
Earlier approved GLP-1; effective, now largely superseded by newer agents.
Weight lossMetabolicApproved
A
PT-141 (Bremelanotide)
Approved (Vyleesi) for low sexual desire; melanocortin agonist.
Sexual healthApproved
A
Insulin
The original therapeutic peptide (1921). Approved, life-saving, and a peptide.
MetabolicApprovedSport: banned
A
Oxytocin
Approved hormone; explored off-label for bonding and mood.
Sexual healthBrain & cognitiveApproved
B
Tesamorelin
Approved for HIV-related visceral fat; notable for stripping belly fat.
Weight lossMetabolicMuscle growthApprovedSport: banned
B
Thymosin Alpha-1
Immune-modulating peptide approved in several countries.
Immune supportApproved
C
Retatrutide
Phase-3 triple agonist; striking trial results but not yet approved.
Weight lossMetabolicIn trials
C
GHK-Cu
Copper peptide with some human skin studies; topical form widely sold.
Skin & beautyHealing & recoveryResearch-only
C
Ipamorelin
GH secretagogue; limited human data, popular in recovery stacks.
Muscle growthLongevityResearch-onlySport: banned
C
MK-677 (Ibutamoren)
Oral GH secretagogue (not strictly a peptide); some human data, raises glucose.
Muscle growthSleep & stressResearch-onlySport: banned
C
Sermorelin
GHRH analogue once approved for GH deficiency; modest human evidence.
Muscle growthLongevityApprovedSport: banned
C
Selank
Anxiolytic peptide studied mainly in Russia; limited Western data.
Brain & cognitiveSleep & stressResearch-only
C
Semax
Nootropic/neuroprotective peptide; Russian studies, sparse global trials.
Brain & cognitiveResearch-only
C
Cerebrolysin
Used clinically in some countries for stroke/dementia; mixed evidence.
Brain & cognitiveApproved
D
BPC-157
Hugely popular for healing; strong animal data, no controlled human trials yet.
Healing & recoveryGut healthResearch-onlySport: banned
D
TB-500
Thymosin Beta-4 fragment; promoted for recovery, evidence is preclinical.
Healing & recoveryMuscle growthResearch-onlySport: banned
D
CJC-1295
GHRH analogue often paired with ipamorelin; evidence is thin in humans.
Muscle growthLongevityResearch-onlySport: banned
D
IGF-1 LR3
Long-acting IGF-1; bodybuilding favourite with real safety concerns.
Muscle growthResearch-onlySport: banned
D
Melanotan II
Tanning + libido effects; real safety concerns including mole/melanoma risk.
Skin & beautySexual healthResearch-only
D
MOTS-c
Mitochondrial peptide dubbed "exercise in a vial"; mostly preclinical.
MetabolicLongevityResearch-only
D
Epitalon
Promoted as anti-ageing via telomerase; human evidence is very limited.
LongevityResearch-only
D
AOD-9604
A GH fragment marketed for fat loss; human trials were largely disappointing.
Weight lossResearch-only
D
5-Amino-1MQ
Emerging metabolic compound; early research only.
MetabolicWeight lossResearch-only
D
DSIP
Delta sleep-inducing peptide; intriguing name, weak human evidence.
Sleep & stressResearch-only
D
KPV
Anti-inflammatory tripeptide; promising preclinical gut data.
Gut healthHealing & recoveryImmune supportResearch-only
D
LL-37
Antimicrobial peptide; early research, handle claims with caution.
Immune supportHealing & recoveryResearch-only

Grades reflect the strongest human evidence supporting a peptide’s main claims (A = approved + proven, D = animal evidence only). Status and legality are informational, not legal or medical advice. Many peptides listed are not approved medicines.

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