Free reference
Peptide guide
What each peptide is, what the research actually shows, side effects and legal status, with every claim linked to its source. PepDose sells no peptides and takes no vendor money.
Choosing between two? See peptides compared side by side in our blogs.
GLP-1 & Weight
Tirzepatide
A once-weekly injection that acts on two gut hormone receptors (GIP and GLP-1). Approved in the US as Mounjaro for type 2 diabetes and Zepbound for weight management.
Retatrutide
An investigational once-weekly injection that acts on three hormone receptors: GIP, GLP-1 and glucagon. Phase 3 results were published in September 2026. It is not approved yet.
Semaglutide
A once-weekly GLP-1 receptor agonist. Approved in the US as Ozempic for type 2 diabetes and Wegovy for weight management.
Recovery & Repair
BPC-157
A 15-amino-acid peptide based on a protein found in gastric juice. Widely studied in animals for tissue healing; human evidence is very thin.
TB-500
A synthetic peptide related to thymosin beta-4, a natural protein involved in cell movement and wound repair. Human data on TB-500 itself is essentially absent.
Growth Hormone Axis
CJC-1295 + Ipamorelin
A pairing of two growth-hormone-releasing peptides: CJC-1295 (a GHRH analog) and ipamorelin (a ghrelin-receptor agonist). Neither is approved.
Tesamorelin
A growth-hormone-releasing hormone (GHRH) analog. FDA-approved as Egrifta to reduce excess belly fat in people with HIV-associated lipodystrophy.
Longevity & Mitochondrial
Skin, Hair & Pigment
GHK-Cu
A tiny copper-binding peptide (glycine-histidine-lysine) found naturally in human blood. Well known in skincare; injectable use has little human data.
GLOW blend
A pre-mixed vial of GHK-Cu, BPC-157 and TB-500. Each part has its own (mostly animal and lab) research; the blend itself has never been studied.
KLOW blend
GLOW with KPV added: GHK-Cu, BPC-157, TB-500 and KPV in one vial. The parts have mostly animal and lab research; the blend has never been studied.