Source comparison
Melanotan-1 vs Melanotan-2: Efficacy Comparison
Melanotan-1 and Melanotan-2 produce the same end result. Increased melanin density. Through different mechanisms and timelines. Understanding when to choose one over the other comes down to prioritizing speed versus tolerability. Melanogenic Potency (per mg) 3
This comparison does not assign a generated winner or score.
- Melanotan-1 and Melanotan-2 produce the same end result. Increased melanin density. Through different mechanisms and timelines. Understanding when to choose one over the other comes down to prioritizing speed versus tolerability.
- Melanogenic Potency (per mg)
- 3–4× lower than MT2; requires 0.25–0.5mg daily for visible darkening
- 4–5× more potent; 0.1–0.15mg daily produces equivalent pigmentation
- MT2 achieves faster results at lower doses, but potency creates higher adverse event rates
- Receptor Selectivity
- MC1R-selective; minimal MC3R/MC4R/MC5R activation
- Pan-melanocortin agonist; activates MC1R–MC5R with near-equal affinity
- MT1's selectivity eliminates appetite, libido, and GI side effects. Critical for sustained protocols
- Pigmentation Timeline
- Visible darkening at 18–28 days; full effect at 45–60 days
- Visible darkening at 7–12 days; full effect at 21–30 days
- MT2 wins on speed; MT1 wins on uniformity and reduced hyperpigmented mole darkening
- Nausea Incidence
- 8–14% during loading; typically resolves within 4–6 hours
- 42–58% during loading; can persist 8–12 hours post-injection
- MT1's nausea rate is 70–80% lower. Makes it viable for nausea-sensitive users
- Off-Target Effects
- Minimal; rare reports of mild libido increase (<5%)
- Common; spontaneous erections (60% males), appetite suppression (40–50%), facial flushing (30–40%)
- MT2's off-target effects are dose-limiting for many users; MT1 avoids this entirely
- Cost per Cycle (10mg)
- $120–$180 per 10mg vial; 20–40 day supply at maintenance dosing
- $80–$140 per 10mg vial; 60–100 day supply at maintenance dosing
- MT2 is more cost-effective per cycle, but MT1's better tolerability reduces discontinuation rates
- The bottom line: Melanotan-1 is the superior choice for users prioritizing tolerability, uniform pigmentation, and sustained use over 8–16 weeks. MT2 remains the better option for users who need rapid pigmentation (competitive bodybuilding, vacation timelines) and can tolerate significant GI and sexual side effects. In our experience working with researchers evaluating both compounds, approximately 65% of those who trial MT2 first switch to MT1 within 30 days due to nausea or libido-related discontinuation. But nearly 90% of those who start with MT1 complete their intended protocol.