PT-141 vs Melanotan I vs Melanotan II
Mechanism, receptor target, half-life, dose, and best-price vendor side by side.
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| Field | PT-141 | Melanotan I | Melanotan II |
|---|---|---|---|
| Receptor target | Melanocortin 3/4 receptors (MC3R, MC4R) | Melanocortin 1 receptor (MC1R) | Melanocortin 3, 4, 5 (non-selective) |
| Mechanism class | melanocortin agonist | melanocortin agonist | melanocortin agonist |
| Half-life | ~2 hours | ~1 hour | ~1 hour |
| Typical dose | 0.5–2 mg SC as needed | 0.1–1 mg daily SC | 0.25–1 mg daily SC |
| Sequence length | 5 residues | 13 residues | 5 residues |
| Best-price vendor | Glacier Aminos → $89.99 (30mg) — $3.00/mg | Glacier Aminos → $25.49 (10mg) — $2.55/mg | Glacier Aminos → $25.49 (10mg) — $2.55/mg |
| See all vendors | /best/pt-141 → | /best/melanotan-1 → | /best/melanotan-2 → |
Dig deeper
Pricing pulls live from our vendor database. Molecular data comes from published peptide literature. For full dosing protocols, side effects, and research citations, open each peptide's individual page.