Peptide Directory
Peptides, and what the record actually shows
A seller with a GLP-1 on the shelf usually has a peptide next to it. The grouping below runs on the weight of published evidence rather than on the body part being marketed, since the seller page rarely puts those two things side by side. Each guide cites primary research, and a thin record is stated on the card before you click.
Most of the peptides listed here hold no FDA approval and reach patients through compounding pharmacies. Read this as background rather than medical advice, and take any decision to a licensed clinician.
Related: what GLP-1s are prescribed for, by condition and the seller reviews.
A low grade is a finding
A weak grade does not mean the compound does nothing. It means nobody has run the study that would settle it, and that absence is itself the result. Sellers price the promising ones the same as the proven ones.
Compounded is not approved
An FDA approval attaches to a named product from a named manufacturer. A compounded peptide is prepared by a pharmacy against a prescription and carries no such approval. That is how the supply chain works, not an accusation about any one seller.
The headline is rarely the rate
Peptide pricing behaves like GLP-1 pricing. The advertised figure is often a first month, a membership fee, or a multi-month prepay divided out. The seller review is where the standing rate is written down.
Grade A: approved, or strong randomized evidence
An FDA-approved product for this use, or randomized trials large enough to rely on.
PT-141
Grade ADesire & arousal
A melanocortin agonist working on arousal pathways in the brain. It holds a real FDA approval, as Vyleesi, and is sold well past the population that approval covers.
Listed by 61 sellers on the register →
Gonadorelin
Grade ATestosterone & fertility axis
A gonadotropin-releasing hormone, used mostly alongside TRT to keep the body's own testosterone and fertility axis running.
Listed by 10 sellers on the register →
Tesamorelin
Grade AVisceral fat, approved use
The one GHRH analog here carrying an approved indication: Egrifta, for visceral abdominal fat in HIV-associated lipodystrophy. Body-composition use is off-label.
Listed by 28 sellers on the register →
Grade B: real trials, real limits
Human trials exist and point one way, but they are small, short, or run in a narrower population than the people being sold it.
NAD+
Grade BEnergy & cellular aging
The coenzyme behind cellular energy production and DNA repair. Clinics deliver it by drip or injection; supplement makers sell the precursors instead.
Listed by 215 sellers on the register →
Sermorelin
Grade BOwn growth-hormone output
A GHRH analog. Rather than supplying growth hormone, it signals the pituitary to release what the body already makes. Taken for sleep, recovery and body composition.
Listed by 188 sellers on the register →
MK-677
Grade BGrowth hormone pill, not a peptide
An oral growth hormone secretagogue sold beside peptides, though it is a small molecule. In trials it raised IGF-1 and lean mass without making anyone stronger, and a trial in hip-fracture patients stopped early over heart failure.
Listed by 4 sellers on the register →
SS-31
Grade BMitochondrial claims, one narrow approval
A four-amino-acid peptide that binds cardiolipin, a fat in the inner membrane of mitochondria. FDA approved it in 2025 as Forzinity for Barth syndrome, a rare genetic disease, after a larger trial in mitochondrial muscle disease failed.
Grade C: mechanism and anecdote, not outcomes
A plausible mechanism, animal work, or small uncontrolled series. Nothing here establishes that it does what the seller says in humans.
Glutathione
Grade CAntioxidant infusions
An antioxidant the body already produces, sold back to it by infusion, injection or capsule for oxidative stress, skin and general wellness.
Listed by 123 sellers on the register →
GHK-Cu
Grade CSkin & hair repair
A copper-binding tripeptide. Cosmetic topical use is mainstream; the injected version rests on far weaker evidence.
Listed by 53 sellers on the register →
BPC-157
Grade CTendon & gut repair
A synthetic peptide fragment with a large following in recovery circles and a thin human evidence base. The healing research behind it was done mostly in animals.
Listed by 40 sellers on the register →
TB-500
Grade CSoft-tissue recovery
A synthetic fragment of thymosin beta-4, taken for muscle, tendon and soft-tissue recovery and very often stacked with BPC-157.
Listed by 29 sellers on the register →
CJC-1295 / Ipamorelin
Grade COwn growth-hormone output
Two peptides sold as a single protocol: a GHRH analog alongside a selective secretagogue, both aimed at the body's own growth-hormone output.
Listed by 21 sellers on the register →
Ipamorelin
Grade COwn growth-hormone output
A selective growth-hormone secretagogue, preferred in practice because it disturbs cortisol and prolactin less than the older alternatives. Taken for sleep, recovery and body composition.
Listed by 13 sellers on the register →
Semax
Grade CNootropic claims, Russian drug
A seven-amino-acid analog of an ACTH fragment, registered as nasal drops in Russia and sold in the US as a nootropic. No trial has scored memory or attention in people taking it.
Listed by 23 sellers on the register →
Selank
Grade CAnxiety claims, Russian trials
A seven-amino-acid relative of the immune peptide tuftsin, developed in Russia and sold here for anxiety and focus. Its human trials are small Russian studies that compared it with benzodiazepines, and none we found used a placebo.
Listed by 7 sellers on the register →
CJC-1295
Grade COwn growth-hormone output
A long-acting copy of the hormone that tells the pituitary to release growth hormone. Two small 2006 studies showed one injection raises GH and IGF-1 for days; no trial has measured muscle, fat or recovery.
Listed by 1 seller on the register →
Thymosin Alpha-1
Grade CImmune claims, mixed trials abroad
A 28-amino-acid thymus peptide sold in the US for immune support. It has decades of trials abroad in hepatitis B and sepsis, and the largest, in 1,106 adults with sepsis, found no effect on deaths.
Listed by 3 sellers on the register →
DSIP
Grade CSleep claims, 1980s trials
A nine-amino-acid peptide named in 1977 for a brain-wave effect in rabbits and sold now as a sleep aid. Small insomnia trials in the 1980s and 1990s mostly found little benefit, and no receptor for it has been identified.
Listed by 6 sellers on the register →
Grade D: sold well ahead of its evidence
Marketed widely with little or no human outcome data behind the claim.
MOTS-c
Grade DMitochondrial claims, mouse data
A mitochondrial-derived peptide sold on what it did to mice, where it behaved as a metabolic regulator. No human trial has found that it causes weight loss, and it holds no FDA approval.
Listed by 27 sellers on the register →
KPV
Grade DGut & skin inflammation, mouse data
A three-amino-acid tail of the hormone alpha-MSH, sold for gut and skin inflammation. It calmed colitis in mice, and FDA found no study of it in people by any route.
Listed by 20 sellers on the register →
Epitalon
Grade DTelomere claims, cell data
A four-amino-acid peptide sold as a telomere and anti-aging treatment. The telomere results are from cell cultures, and the famous mortality figures belong to a cattle pineal extract, a different substance.
Listed by 23 sellers on the register →
AOD-9604
Grade DFat-loss claims, failed trials
A modified fragment of human growth hormone, sold for fat loss. Its developer tested it as a pill in obese adults, saw too little weight loss to matter and ended the obesity program in 2007.
Listed by 3 sellers on the register →
5-Amino-1MQ
Grade DFat-loss claims, mouse data, not a peptide
A small molecule, not a peptide, that blocks an enzyme called NNMT. It cut weight and fat in obese mice, and no study of it in people has been published or registered.
Listed by 4 sellers on the register →