Peptide Library

Every compound, held to the same standard — interest, evidence, and uncertainty, all shown together.

Not just FDA-approved, investigational, preclinical, or a different regulatory category entirely (like cosmetics) — every entry also shows why people are interested and what the research momentum actually looks like.

FDA-Approved (specific products)

Semaglutide

GLP-1 (glucagon-like peptide-1) receptor agonist

Human ResearchSubstantial
Real-World InterestHigh
FDA-Approved (specific products)

Tirzepatide

Dual GIP/GLP-1 receptor agonist

Human ResearchSubstantial
Real-World InterestHigh
Investigational

Retatrutide

Triple agonist — GIP, GLP-1, and glucagon receptor

Human ResearchLimited
Real-World InterestHigh
Preclinical-Dominant / Not Approved

BPC-157

Synthetic peptide fragment (derived from a protein identified in gastric juice)

Human ResearchVery Limited
Real-World InterestHigh
Cosmetic Ingredient

GHK-Cu (Copper Peptide)

Copper-binding tripeptide

Human ResearchModerate
Real-World InterestModerate
Preclinical-Dominant / Not Approved

TB-500

Synthetic fragment of Thymosin Beta-4

Human ResearchVery Limited
Real-World InterestModerate
Not Approved

CJC-1295

Growth hormone–releasing hormone (GHRH) analog

Human ResearchLimited
Real-World InterestModerate
Not Approved

Ipamorelin

Growth hormone secretagogue (ghrelin/growth hormone secretagogue receptor agonist)

Human ResearchLimited
Real-World InterestModerate
FDA-Approved (specific product)

Tesamorelin

Growth hormone–releasing hormone (GHRH) analog

Human ResearchSubstantial
Real-World InterestModerate
Formerly FDA-Approved / Discontinued (Not Currently Marketed)

Sermorelin

Growth hormone–releasing hormone (GHRH) analog

Human ResearchModerate
Real-World InterestModerate
Not Approved / Development Discontinued

MK-677 (Ibutamoren)

Oral ghrelin-receptor agonist / growth hormone secretagogue

Human ResearchModerate
Real-World InterestHigh
Early-Stage / Not Approved

MOTS-c

Mitochondrial-derived peptide

Human ResearchVery Limited
Real-World InterestEmerging
Early-Stage / Not Approved

KPV

Tripeptide fragment of alpha-melanocyte-stimulating hormone (α-MSH)

Human ResearchNone Identified
Real-World InterestEmerging
Not Approved (US)

Epitalon (Epithalon)

Synthetic tetrapeptide, based on the natural pineal gland extract "epithalamin"

Human ResearchLimited
Real-World InterestModerate
Not Approved (US)

Thymosin Alpha-1

Thymic peptide (immune-modulating)

Human ResearchModerate
Real-World InterestModerate
FDA-Approved (specific population/use)

PT-141 (Bremelanotide)

Melanocortin-receptor agonist

Human ResearchSubstantial
Real-World InterestHigh