The Pep Test Guide 2026
The Pep Test Guide 2026U.S. vendor guide

Compound wiki

18 Active substances in detail: mechanism, dosage, half-life, application. Sort by category or by search.

BPC-157

Healing

also: Body Protective Compound, Pentadecapeptide

Stomach-active peptide with evidence of wound healing in animal studies. Popular for tendon topics.

Typical dose: 250-500 mcg

TB-500

Healing

also: Thymosin Beta-4, TB4

Thymosin beta-4 fragment with repair indications in preclinical studies.

Typical dose: 2000-5000 mcg

semaglutide

GLP-1

also: Ozempic, Wegovy

GLP-1 receptor agonist with approved indication diabetes type 2 and obesity in pharmaceutical versions.

Typical dose: 250-2400 mcg

tirzepatide

GLP-1

also: Mounjaro, Zepbound

Dual GLP-1/GIP agonist. Pharmaceutical version approved for type 2 diabetes and obesity.

Typical dose: 2500-15000 mcg

retatrutide

GLP-1

also: LY3437943, triple agonist

Triple agonist (GLP-1, GIP, Glucagon) in phase 3 studies with Eli Lilly. Not yet allowed.

Typical dose: 2000-12000 mcg

ipamoreline

HGH system

also: IPA

Ghrelin mimetic, stimulates the body's own HGH secretion. Popular in the HGH system stack.

Typical dose: 100-300 mcg

CJC-1295

HGH system

also: CJC, DAC, Mod GRF 1-29

GHRH analogue. Variant with DAC has extended half-life. Often stuck with ipamoreline.

Typical dose: 100-300 mcg

GHK Cu

Cosmetic

also: Copper peptides

copper tripeptide. Known for skin regeneration and hair growth in topical application.

Typical dose: 1000-3000 mcg

PT-141

Cognitive

also: bremelanotide

Melanocortin agonist. Approved as Vyleesi for HSDD. It works centrally.

Typical dose: 750-2000 mcg

MK-677

HGH system

also: Ibutamors

Oral ghrelin receptor agonist. Increases IGF-1 in the long term. Non-peptide, Orally active.

Typical dose: 10000-25000 mcg

AOD-9604

Anti-aging

also: HGH fragment 176-191

HGH fragment without growth-promoting effect. Preclinical with indications of fat oxidation.

Typical dose: 250-500 mcg

5-Amino-1MQ

Anti-aging

also: NNMT inhibitor

NNMT inhibitor with indication of metabolic effects in animal studies.

Typical dose: 50000-150000 mcg

rapamycin

Anti-aging

also: Sirolimus

mTOR inhibitor. Admitted as an immunosuppressant after kidney transplantation, off-label in the longevity area discussed.

Typical dose: 1000-6000 mcg

tesamoreline

HGH system

also: Egrifta

GHRH analogue approved as Egrifta for HIV-associated lipodystrophy.

Typical dose: 1000-2000 mcg

hexareline

HGH system

also: HEX

Second generation GHRP. Stronger than GHRP-2, with indications of desensitisation during continuous use.

Typical dose: 100-200 mcg

Melanotane-2

Cosmetic

also: MT-2, MT-II

Synthetic analogue of melanocortin. Acts on MC1R to MC5R, affects pigmentation and sexual function.

Typical dose: 250-1000 mcg

MK-2866

Anti-aging

also: Ostarines, enobosarm

Selective androgen receptor modulator. Investigated in clinical studies for muscle wasting. Non-peptide, Orally active.

Typical dose: 10000-25000 mcg

NAD+

Anti-aging

also: nicotinamide adenine dinucleotide

Co-enzyme with central role in Sirtuin Pathway and mitochondrial function. Injectable or IV in longevity setting.

Typical dose: 50000-250000 mcg