The Independent
Peptide Encyclopedia.

An evidence-graded peptide reference. Every compound carries a research grade, dosing drawn from published protocols, and links to the primary literature.

⌘K

54 compounds · 324 reference sections · graded, not ranked

Notable Peptides

All 54 compounds

hCG (Human Chorionic Gonadotropin)

growth & hormonesSgrade

An FDA-approved hormone that mimics LH, restoring the body's own testosterone and sperm production — the label dates to 1962.

Retatrutide

fat loss & metabolismAgrade

An investigational triple GIP/GLP-1/glucagon receptor agonist producing some of the largest average weight reductions reported for a single agent.

BPC-157 + TB-500 Blend

recovery & healingBgrade

A single-vial blend of BPC-157 and TB-500 — local plus systemic tissue repair in one convenient injection.

GLOW Blend

skin & aestheticsBgrade

A copper-peptide-forward single-vial blend pairing GHK-Cu's skin remodeling with BPC-157 and TB-500's tissue-repair support.

Tesamorelin + Ipamorelin Blend

growth & GHBgrade

A single-vial blend pairing FDA-approved GHRH analog Tesamorelin with the selective ghrelin-agonist Ipamorelin for a combined GH pulse in one injection.

BPC-157

recovery & healingCgrade

A synthetic peptide derived from a gastric protein, used for soft-tissue healing, gut repair, and reducing inflammation.

CJC-1295 (no-DAC) + Ipamorelin Blend

growth & GHCgrade

A single-vial blend pairing short-acting CJC-1295 (no-DAC) with Ipamorelin for a clean, physiological GH pulse in one shot.

Ipamorelin

growth & GHCgrade

A selective GH secretagogue (ghrelin mimetic) that raises growth hormone with minimal effect on cortisol or appetite.

KLOW Blend

recovery & healingCgrade

A single-vial 4-peptide blend combining GHK-Cu, KPV, BPC-157, and TB-500 — the most comprehensive of the popular research recovery blends.

CJC-1295 (DAC)

growth & GHDgrade

The long-acting form of CJC-1295: a DAC tag extends its half-life to days for a sustained growth hormone bleed.

TB-500

recovery & healingDgrade

A synthetic fragment of Thymosin Beta-4 used for systemic recovery, muscle repair, and improved flexibility.

Exenatide

fat loss & metabolismSgrade

The first-in-class GLP-1 receptor agonist, derived from a peptide found in Gila monster saliva — sold as Byetta and Bydureon.

Liraglutide

fat loss & metabolismSgrade

A once-daily GLP-1 receptor agonist — the class predecessor to semaglutide and tirzepatide, still widely prescribed under Victoza and Saxenda.

Orforglipron

fat loss & metabolismSgrade

The first oral, non-peptide GLP-1 receptor agonist pill with no food or water restrictions — FDA-approved in 2026 as Foundayo.

PT-141

sexual healthSgrade

A melanocortin agonist used to enhance sexual desire and arousal in both men and women, acting on the brain rather than vasculature.

Semaglutide

fat loss & metabolismSgrade

A GLP-1 receptor agonist that reduces appetite and improves glucose control, widely used for weight loss.

Somatropin (HGH)

growth & hormonesSgrade

Recombinant human growth hormone — a 191-amino-acid polypeptide identical to the body's own pituitary GH, sold under brands including Humatrope and Genotropin.

Tesamorelin

fat loss & metabolismSgrade

An FDA-approved GHRH analog known for reducing stubborn visceral fat and raising IGF-1 levels.

Tirzepatide

fat loss & metabolismSgrade

A dual GIP/GLP-1 receptor agonist offering strong appetite suppression and glucose control, often more potent than semaglutide.

MK-677

growth & GHAgrade

An oral ghrelin-receptor agonist that raises growth hormone and IGF-1 around the clock without injections.

Thymosin Alpha-1

longevity & healthspanAgrade

A 28-amino-acid thymic peptide approved in 35+ countries as Zadaxin for immune support — but never FDA-approved in the United States.

Kisspeptin-10

sexual healthBgrade

A decapeptide fragment of human kisspeptin, sitting upstream of the entire reproductive hormone axis by triggering GnRH release.

Melanotan I (Afamelanotide)

skin & aestheticsBgrade

The only melanotan with FDA approval — cleared as Scenesse in 2019 for a rare disorder where sunlight causes severe skin pain, not for general tanning.