Peptide Library

FOR RESEARCH PURPOSES ONLY

BPC-157

Also known as: Body Protection Compound 157, PL 14736, PLD-116

A research reference for BPC-157, a pentadecapeptide with a large rodent literature on tissue repair and gut protection and almost no human evidence.

Last reviewed July 15, 2026

FOR RESEARCH PURPOSES ONLY

KPV

Also known as: Lys-Pro-Val, alpha-MSH 11-13, KPV tripeptide

A research reference for KPV, the three-amino-acid tail of alpha-MSH, with a coherent rodent colitis literature, a well-characterized transporter mechanism, and no human trial.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

TB-500

Also known as: Thymosin Beta-4 fragment, TB4, N-acetylated LKKTETQ

A research reference for TB-500, a synthetic seven-amino-acid fragment of thymosin β4 that is routinely confused with the full protein whose clinical trials it did not participate in.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

Retatrutide

Also known as: LY3437943, Triple hormone receptor agonist

A research reference for retatrutide, an investigational GIP/GLP-1/glucagon triple receptor agonist with striking phase 2 weight data, no approval anywhere, and an unfinished registrational programme.

Last reviewed August 2, 2026

Semaglutide

Also known as: GLP-1 receptor agonist, Ozempic, Wegovy, Rybelsus

A research reference for semaglutide, an FDA-approved GLP-1 receptor agonist with one of the largest randomized trial programmes in metabolic medicine, and real limits that the headlines skip.

Last reviewed August 2, 2026

Tirzepatide

Also known as: Dual GIP/GLP-1 receptor agonist, Mounjaro, Zepbound

A research reference for tirzepatide, an FDA-approved dual GIP/GLP-1 receptor agonist with the largest weight reductions yet reported in randomized obesity trials, and a shorter safety record than the numbers suggest.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

CJC-1295

Also known as: CJC-1295 with DAC, DAC:GRF, hGRF(1-29) albumin bioconjugate

A research reference for CJC-1295, a long-acting GHRH analog with two small human pharmacology studies showing raised GH and IGF-1 and no trial of any clinical outcome.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

Ipamorelin

A research reference for ipamorelin, a selective growth-hormone secretagogue with solid rodent pharmacology, one human dose-ranging study, and one phase 2 trial that missed its endpoint.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

MOTS-c

Also known as: Mitochondrial open reading frame of the 12S rRNA-c, Mitochondrial-derived peptide MOTS-c

A research reference for MOTS-c, a mitochondria-encoded peptide with a strong mouse metabolic literature, real human biomarker data, and no published trial in which anyone has been given it.

Last reviewed August 2, 2026

NAD+

Also known as: Nicotinamide adenine dinucleotide, NAD

A research reference for NAD+, a coenzyme whose oral precursors have a real randomized-trial literature, and whose injected form has none.

Last reviewed August 2, 2026

FOR RESEARCH PURPOSES ONLY

GHK-Cu

Also known as: Copper tripeptide-1, GHK, Glycyl-L-histidyl-L-lysine, Copper peptide

A research reference for GHK-Cu, a naturally occurring copper-binding tripeptide with four decades of cell and rodent work on matrix remodeling and almost no controlled human evidence.

Last reviewed August 2, 2026

PT-141

Also known as: Bremelanotide, Vyleesi

A research reference for PT-141, an FDA-approved melanocortin agonist for hypoactive sexual desire disorder in premenopausal women, with statistically significant but small trial effects and a heavy tolerability burden.

Last reviewed August 2, 2026

DHEA

Also known as: Dehydroepiandrosterone, Prasterone

A research reference for DHEA, an adrenal steroid precursor sold over the counter as a dietary supplement in the US, dispensed as an approved prescription product only in a local vaginal form and through compounding pharmacies, with randomized evidence that is positive in adrenal insufficiency and largely negative for the anti-aging claims it is best known for.

Last reviewed August 2, 2026

NP Thyroid

Also known as: Desiccated thyroid extract, Natural desiccated thyroid, Porcine thyroid extract

A research reference for NP Thyroid, a porcine desiccated thyroid extract that the FDA classifies as an unapproved biological product marketed without the required license, and that showed no advantage over levothyroxine on symptoms or cognition in two randomized crossover trials.

Last reviewed August 2, 2026

Testosterone

Also known as: Testosterone replacement therapy, TRT

A research reference for testosterone therapy, the one compound in this library with a large randomized trial literature, and a prescription hormone that requires a diagnosis, a prescriber, and ongoing lab monitoring.

Last reviewed August 2, 2026