Peptide library · 54 records · 34 full reviews

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Search by name. Full reviews explain the studies, results, and limits. Entries without a full review link to one source while review is pending.

See the VIP peptide review for an example of how a study result and product records are checked.

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How strong is the evidence?Established means an official review or strong studies in people support one defined use. Emerging means studies in people are still growing. Insufficient means reliable studies in people are missing or limited.
Review statusFull review means the evidence and its limits were checked. Indexed means a name and source are listed, but a full review is not ready yet.

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How strong is the evidence?Established means an official review or strong studies in people support one defined use. Emerging means studies in people are still growing. Insufficient means reliable studies in people are missing or limited.
Review statusFull review means the evidence and its limits were checked. Indexed means a name and source are listed, but a full review is not ready yet.

Showing 21–40 of 54 peptides

Metabolic peptide medicines

AOD-9604

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

A modified piece of growth hormone studied in obesity programs. It has no approved use and unresolved route, product, and safety questions.

Research in progress · Last checked 2026-07-23

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Longevity and cellular signaling

Epitalon

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

A four-amino-acid peptide promoted for sleep and longevity. Its evidence has identity-transfer problems and no established insomnia or lifespan outcome evidence.

Unapproved or compounded · Last checked 2026-07-23

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Melanocortin medicines

Bremelanotide

EstablishedAn official agency review or strong, repeated studies in people support one clear use. That evidence applies only to the product, people, and use in the reviewed sources. It does not mean the product is safe or effective for everyone.

An approved medicine for one defined sexual-desire disorder. It is not a general sexual-performance enhancer.

Approved medicine · Last checked 2026-08-01

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Melanocortin medicines

Afamelanotide

EstablishedAn official agency review or strong, repeated studies in people support one clear use. That evidence applies only to the product, people, and use in the reviewed sources. It does not mean the product is safe or effective for everyone.

An approved implant that increases pain-free light exposure in adults with EPP. It is not a general tanning or cosmetic peptide.

Approved medicine · Last checked 2026-07-23

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Bone and tissue peptide medicines

Teriparatide

EstablishedAn official agency review or strong, repeated studies in people support one clear use. That evidence applies only to the product, people, and use in the reviewed sources. It does not mean the product is safe or effective for everyone.

An established osteoporosis medicine that can reduce fracture risk in defined groups. Its evidence does not apply to every fracture-healing claim.

Approved medicine · Last checked 2026-07-23

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Bone and tissue peptide medicines

Abaloparatide

EstablishedAn official agency review or strong, repeated studies in people support one clear use. That evidence applies only to the product, people, and use in the reviewed sources. It does not mean the product is safe or effective for everyone.

An approved osteoporosis medicine with fracture evidence in defined groups and product-specific safety limits.

Approved medicine · Last checked 2026-07-23

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Gut and intestinal peptide medicines

Teduglutide

EstablishedAn official agency review or strong, repeated studies in people support one clear use. That evidence applies only to the product, people, and use in the reviewed sources. It does not mean the product is safe or effective for everyone.

An established medicine that can reduce support given through a vein in short bowel syndrome. It needs intensive product-specific monitoring.

Approved medicine · Last checked 2026-07-23

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Melanocortin medicines

Melanotan II

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

An unapproved tanning peptide. Two small older studies measured pigment and erectile effects, while serious harms appear in case reports and the supply chain is unverified.

Research in progress · Last checked 2026-07-31

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Synthetic neuropeptides

Semax

EmergingSome studies in people exist. Important questions remain about benefit, safety, who it helps, or how long the effects last. This is not an approval or recommendation.

Semax is a seven-amino-acid peptide. FDA has not approved it. Human studies do not prove a benefit.

Research in progress · Last checked 2026-08-30

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Synthetic neuropeptides

Selank

EmergingSome studies in people exist. Important questions remain about benefit, safety, who it helps, or how long the effects last. This is not an approval or recommendation.

Selank is a seven-amino-acid peptide. Small studies in people do not prove that it treats anxiety or improves focus.

Research in progress · Last checked 2026-08-30

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Sleep-related peptides

DSIP

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

DSIP is a nine-amino-acid peptide. Studies do not prove it works. FDA has not approved DSIP.

Research in progress · Last checked 2026-08-30

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Host-defense peptides

LL-37

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

LL-37 is a body-made peptide with 37 amino acids. Human studies do not prove a general health benefit. No FDA-approved LL-37 drug was found.

Research in progress · Last checked 2026-08-30

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Longevity and cellular signaling

P21 peptide

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

P21 peptide is also called P021 or P-21. Its benefits and safety in people are not known.

Unapproved or compounded · Last checked 2026-08-30

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Gut and intestinal peptide signals

VIP peptide

InsufficientReliable studies in people are missing, too limited, or do not support the claim. This does not prove that the substance has no effect on the body.

VIP is a natural 28-amino-acid body signal. A trial of synthetic VIP did not establish a treatment benefit.

Research in progress · Last checked 2026-09-12

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Somatostatin analogues

Octreotide

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for SANDOSTATIN. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

Somatostatin analogues

Lanreotide

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for SOMATULINE DEPOT. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

Somatostatin analogues

Pasireotide

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for SIGNIFOR. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

Vasopressin analogues

Vasopressin

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for VASOSTRICT. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

Vasopressin analogues

Terlipressin

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for TERLIVAZ. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

GnRH analogues

Leuprolide

Indexed · full review not ready

A U.S. Food and Drug Administration (FDA) product record exists for LUPRON DEPOT. This site has not completed a full product or evidence review.

FDA record to check · Last checked 2026-08-02

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About these records

Why some entries have a full review

An entry can appear before its full review is ready. It links to a source, but it does not prove a benefit or safety claim. We publish a full review after checking the main sources, important limits, date, and each claim.