Melanotan II
Price and cost-per-mg comparison
Melanotan II is a synthetic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH), a neuropeptide that activates melanocortin receptors (MC1R, MC4R) involved in pigmentation, sexual arousal, and appetite regulation. By agonizing MC4R receptors in the central nervous system, melanotan II promotes erectile function and sexual arousal through a centrally mediated pathway, distinct from the peripheral vasodilatory mechanism of PDE5 inhibitors. An early randomized controlled trial demonstrated significant improvements in erectile function and sexual desire in men with organic erectile dysfunction, and subsequent reviews have characterized the melanocortin receptor class as a pharmacological target for sexual dysfunction. Melanotan II is not approved by the FDA or any major regulatory agency for any indication; it is a research compound associated with significant off-target effects, and a related compound (bremelanotide, marketed as PT-141) holds FDA approval for hypoactive sexual desire disorder in pre-menopausal women. Melanotan II vs PT-141: bremelanotide (PT-141) was developed directly from the melanotan II research program as a cleaner successor compound. PT-141 was designed to retain the MC4R-mediated sexual response effects while reducing the tanning (MC1R) and nausea side effects that characterize melanotan II. The key practical distinction is that PT-141 has completed Phase 3 trials and holds FDA approval, while melanotan II remains an unapproved research compound. Melanotan II is associated with more pronounced side effects than its successor — including facial flushing, nausea, spontaneous erections, and significant skin pigmentation from MC1R activation — which contributed to its replacement by the more selective bremelanotide in clinical development. The side effect profile is dose-dependent, with nausea being the most commonly reported adverse event. Melanotan II has no approved clinical use in any jurisdiction; individuals interested in melanocortin-based sexual health compounds are better served by consulting providers offering FDA-approved PT-141 (bremelanotide), listed in the PeptideBase directory.
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Filter by vial size and quantity — the figures and table follow.
| Vendor | Size | Price | Cost per mg▲ | COA | Source | Availability | Actions |
|---|---|---|---|---|---|---|---|
10 mgsingle vials44 listingsmedian $4.00 / mg | |||||||
US Melanotan II 10 mg | 10 mg vial | $23.49 | $2.35Lowest | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Finnrick C Melanotan II, 10mg | 10 mg vial | $27.96 | $2.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II (MT-2) 10mg | 10 mg vial | $28.00 | $2.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II (MT-2) 10mg | 10 mg vial | $28.04 | $2.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US MT2 (Melanotan 2 Acetate) 10mg | 10 mg vial | $29.99 | $3.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II – 10mg | 10 mg vial | $29.99 | $3.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 – 10mg | 10 mg vial | $30.00 | $3.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
UK Melanotan 2 (MT2) 10mg Peptide | 10 mg vial | $31.21listed GBP 22.95 | $3.12 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan-2 (MT-II) | 10 mg vial | $31.50 | $3.15 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 10mg | 10 mg vial | $35.00 | $3.50 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 (MT2) 10 mg | 10 mg vial | $35.00 | $3.50 | — | Vendor feed · 4 wk ago | Site offline | View ↗ |
US MT-2 (Melanotan II) 10MG | 10 mg vial | $35.00 | $3.50 | — | Vendor feed · 4 wk ago | — | View ↗ |
US Melanotan 2 (MT-2) 10mg | 10 mg vial | $36.95 | $3.69 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US MT-2 10mg (Melanotan II) | 10 mg vial | $37.99 | $3.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 10MG | 10 mg vial | $38.00 | $3.80 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II 10MG | 10 mg vial | $38.00 | $3.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Finnrick A Melanotan II (10mg) | 10 mg vial | $39.00 | $3.90 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II [10mg] | 10 mg vial | $39.99 | $4.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US MT-II – 10mg | 10 mg vial | $39.99 | $4.00 | — | Vendor feed · 2 mo ago | — | View ↗ |
US Melanotan II – 10mg | 10 mg vial | $39.99 | $4.00 | — | Vendor feed · 7 wk ago | — | View ↗ |
US Melanotan II 10mg | 10 mg vial | $39.99 | $4.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US MELANOTAN 2 | 10 mg vial | $40.00 | $4.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II | 10 mg vial | $40.00 | $4.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II 10mg | 10 mg vial | $40.00 | $4.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US MT2 10mg | 10 mg vial | $40.00 | $4.00 | Vendor feed · 8 wk ago | — | View ↗ | |
UK MT-2 (Melanotan 2 Acetate) 10mg | 10 mg vial | $40.80listed GBP 30.00 | $4.08 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan 2 – 10MG | 10 mg vial | $41.00 | $4.10 | Vendor feed · 2 wk ago | Out of stock | View ↗ | |
AU Melanotan II 10mg Research Peptide – COA Verified High Purity | 10 mg vial | $43.20listed AUD 60.00 | $4.32 | Vendor feed · 7 wk ago | — | View ↗ | |
US Melanotan II 10mg | 10 mg vial | $44.00 | $4.40 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 10mg | 10 mg vial | $44.00 | $4.40 | Vendor feed · 2 wk ago | Site offline | View ↗ | |
US MELANOTAN 2 10mg | 10 mg vial | $45.00 | $4.50 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II | 10 mg vial | $49.00 | $4.90 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II (10MG) | 10 mg vial | $50.00 | $5.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 – 10MG | 10 mg vial | $50.00 | $5.00 | — | Vendor feed · 2 wk ago | Out of stock | View ↗ |
US MT-2 (Melanotan 2 Acetate) 10mg | 10 mg vial | $50.00 | $5.00 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II 10mg | 10 mg vial | $52.28 | $5.23 | Vendor feed · 2 wk ago | In stock | View ↗ | |
AU Melanotan II | 10 mg vial | $52.51listed AUD 72.93 | $5.25 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan 2 | 10 mg vial | $55.00 | $5.50 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan 2 Acetate (MT-2) 10mg | 10 mg vial | $60.00 | $6.00 | — | Vendor feed · 2 mo ago | — | View ↗ |
US Melanotan II 10mg | 10 mg vial | $65.00 | $6.50 | Vendor feed · 7 wk ago | — | View ↗ | |
US Melanotan II | 10 mg vial | $69.00 | $6.90 | Vendor feed · 2 wk ago | In stock | View ↗ | |
AU MELANOTAN II (10MG) | 10 mg vial | $71.28listed AUD 99.00 | $7.13 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
UK Buy MT-2 (Melanotan 2 Acetate) UK For Lab Research | 10 mg vial | $80.23listed GBP 58.99 | $8.02 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II 10mg | 10 mg vial | $165.75 | $16.57 | Vendor feed · 2 wk ago | In stock | View ↗ | |
Other sizessingle vials, one listing each3 listingsmedian $2.65 / mg | |||||||
US Melanotan 2 | 11 mg vial | $16.49 | $1.50 | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Finnrick A Melanotan II 17mg | 17 mg vial | $45.00 | $2.65 | Vendor feed · 2 wk ago | Out of stock | View ↗ | |
US Melanotan 2 | 5 mg vial | $35.00 | $7.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
10 × 10 mg10-vial packs4 listingsmedian $3.18 / mg | |||||||
US MELANOTAN II 10 mg (10 vials) | 10 × 10 mg100 mg total | $125.00$12.50 / vial | $1.25Lowest | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Finnrick C Melanotan II, 10mg | 10 × 10 mg100 mg total | $279.60$27.96 / vial | $2.80 | Vendor feed · 2 wk ago | In stock | View ↗ | |
CA Melanotan 2 10MG | 10 × 10 mg100 mg total | $356.40$35.64 / viallisted CAD 495.00 | $3.56 | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II | 10 × 10 mg100 mg total | $619.00$61.90 / vial | $6.19 | Vendor feed · 2 wk ago | In stock | View ↗ | |
12 × 10 mg12-vial packs1 listing | |||||||
CA Melanotan II (MT-2) — 10 mg | Batch#MT2-012 | 12 × 10 mg120 mg total | $259.20$21.60 / viallisted CAD 360.00 | $2.16 | Vendor feed · 2 wk ago | In stock | View ↗ | |
Not comparableno resolvable mg — shown, not ranked22 listings | |||||||
US MELANOTAN 2 NASAL SPRAY | nasal spray | $69.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
CA Melanotan II | mass not stated | $36.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II | mass not stated | $38.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US MT2 | mass not stated | $34.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan Intra-Nasal Spray: 20mg | nasal spray | $159.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan II Nasal Spray | nasal spray | $69.00 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melts Pro™ Melanotan II Dissolving Strips | mass not stated | $96.99 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan 2 (MT-2) 10mg 100 VIALS 50% OFF | mg not resolved | $1,847.50 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II Peptide Vial | mass not stated | $24.03 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US PT141 Melanotan 2 Research Stack | blend | $99.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 (MT-II) Peptide | mass not stated | $50.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
CA Melanotan 2 10MG | mg not resolved | $39.60 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US 50mg Melanotan 2 (MT-2) Advanced Research Kit – SAVE 25% | mg not resolved | $153.55 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan 2 MT2 Peptide | mass not stated | $29.95 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US 30mg Melanotan 2 (MT-2) STARTER KIT – SAVE 20% | mg not resolved | $100.64 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melts Pro™ Melanotan II Dissolving Strips | mass not stated | $96.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
CA Melanotan II (MT-2) Nasal Spray 10mg — 10 mL | nasal spray | $64.79 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melanotan 2 (MT-2) 50 VIALS AT 30% OFF | mass not stated | $1,293.25 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II – 10mg (10 vials/kit) | blend | $188.00 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
AU Radiance Bundle - Melanotan II + BAC Water | blend | $39.56 | — | — | Vendor feed · 2 wk ago | In stock | View ↗ |
US Melanotan II | mass not stated | $28.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
US Melts Pro™ Melanotan II Dissolving Strips | mass not stated | $96.99 | — | Vendor feed · 2 wk ago | In stock | View ↗ | |
— in COA: no certificate on file for this vendor— in availability: stock not read at the last checkPrices as scraped; foreign prices converted to USD
When Melanotan II prices moved
5 days in the last 120 on which a feed run read comparable Melanotan II prices from 3 or more vendors. Each point is the median $/mg across every comparable listing read that day, sized by how many vendors were read. A log of run days, not a continuous series.
Show as a table
| Date | Median $/mg | Vendors read |
|---|---|---|
| 28 Sept 2026 | $4.00 | 41 |
| 19 Sept 2026 | $3.80 | 25 |
| 26 Aug 2026 | $3.90 | 32 |
| 25 Aug 2026 | $3.85 | 33 |
| 21 Aug 2026 | $3.60 | 22 |
How these prices are computed
The short version. The methodology page has the rest.
Source
Prices are read from each vendor's own store feed or product markup (Vendor feed). Every row says which source it came from and when it was read. Prices parsed from page text are not in this index.
$/mg
Listed price ÷ stated milligrams, converted to USD. Packs are priced on total milligrams. Listings sold per kit, per ml, as capsules or sprays, as blends, or without a stated mass are shown but not ranked.
Population
Active online research vendors only. Clinic, pharmacy and telehealth prices are excluded. Medians and the p25–p75 band are computed over comparable listings, one row per vendor product and size.
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Educational research tools — not medical advice.