Peptide Encyclopedia

Our encyclopedia of the most researched peptides. Mechanisms of action, studied benefits and research status for each peptide.

38 Guide

Research peptide, not approved as a medicine

GHRP-6

Growth Hormone Releasing Peptide-6 (GHRP-6)

873,0 g/mol →

Approved (medications)

GLP-1

Glucagon-Like Peptide-1

3297.7 g/mol →

Research use only. Not approved for human use by the FDA, the EMA or any comparable regulator.

IGF-1 LR3

Long R3 Insulin-like Growth Factor-1 (Long [Arg3] IGF-I)

≈9,111 g/mol →

Research Only

Ipamorelin

Growth Hormone Secretagogue

711.85 g/mol →

Investigational: studied in published human clinical trials, not approved as a medicine by the FDA or EMA

Kisspeptin

Kisspeptin (KISS1 gene product, also known as metastin); kisspeptin-10 is the shortest fully active fragment

1302.45 g/mol (kisspeptin-10) →

Research use only — not approved for human use

KPV

Lysine-Proline-Valine (α-MSH 11-13)

342.44 g/mol →

Research use only — not approved for human therapeutic use

LL-37

Cathelicidin Antimicrobial Peptide LL-37 (hCAP-18 C-terminal fragment)

4493.33 g/mol →

Clinically Validated

Matrixyl 3000

Palmitoyl Tripeptide-1 & Tetrapeptide-7

578.75 g/mol (mix) →

Research Only

Melanotan 2

Melanotan II (MT-II)

1024.18 g/mol →

Research peptide — not approved for human use

MOTS-c

Mitochondrial Open Reading Frame of the 12S rRNA type-c

2174.60 g/mol →

Coenzyme studied in humans mainly through oral precursors. Injectable forms have very limited published human data and are not approved for anti-aging use.

NAD+

Nicotinamide Adenine Dinucleotide

663.43 g/mol →

FDA approved April 2026 for chronic weight management (brand name Foundayo); authorized in the UK by the MHRA in August 2026; other indications and territories under review

Orforglipron

Orforglipron (development codes LY3502970 and OWL833; brand name Foundayo)

883.0 g/mol →