Peptide Directory

Evidence-based guides on 5 peptides. Click any peptide for dosage, mechanism, clinical trials, and sourcing.

Peptide Fragment (Gastric Protein Derivative)

BPC-157

Also known as: Body Protection Compound 157, PL 14736

Research

A synthetic peptide derived from gastric juice protein, studied for accelerating healing of tendons, muscles, and gut tissue.

Typical dose: 250-500 mcg
Frequency: Once or twice daily
Half-life: Unknown in humans; estimated 4–6 hours based on animal data
Admin: Subcutaneous injection
Injury RecoveryGut HealthAnti-Inflammatory
OverviewDosageSide EffectsWhere to Buy
Growth Hormone Secretagogue (GHRP)

Ipamorelin

Also known as: NNC 26-0161

Research

A selective growth hormone secretagogue that boosts GH release with minimal side effects — popular for anti-aging and body composition.

Typical dose: 200-300 mcg
Frequency: 1–3 times daily (often before bed and/or around workouts)
Half-life: ~2 hours
Admin: Subcutaneous injection
Anti-AgingBody CompositionAthletic Performance
OverviewDosageSide EffectsWhere to Buy
GIP/GLP-1/Glucagon Triple Receptor Agonist

Retatrutide

Also known as: LY3437943, triple agonist peptide

Research

The most powerful weight loss peptide in clinical development, targeting three metabolic receptors simultaneously.

Typical dose: 8-12 mg
Frequency: Once weekly
Half-life: ~7 days (weekly dosing enabled)
Admin: Subcutaneous injection (abdomen, thigh, upper arm)
Weight LossObesityMetabolic Syndrome
OverviewDosageSide EffectsWhere to Buy
GLP-1 Receptor Agonist

Semaglutide

Also known as: Ozempic, Wegovy, Rybelsus

FDA Approved

The peptide that started the weight loss revolution — FDA-approved, clinically proven, and widely accessible.

Typical dose: 1.7-2.4 mg
Frequency: Once weekly (injectable); once daily (Rybelsus oral)
Half-life: ~7 days
Admin: Subcutaneous injection (abdomen, thigh, upper arm)
Weight LossObesityType 2 Diabetes
OverviewDosageSide EffectsWhere to Buy
GIP/GLP-1 Dual Receptor Agonist

Tirzepatide

Also known as: Mounjaro, Zepbound, LY3298176

FDA Approved

FDA-approved dual-action peptide delivering up to 22% weight loss — the gold standard of prescription weight management.

Typical dose: 10-15 mg
Frequency: Once weekly
Half-life: ~5 days
Admin: Subcutaneous injection (abdomen, thigh, upper arm)
Weight LossObesityType 2 Diabetes
OverviewDosageSide EffectsWhere to Buy