guidesFebruary 17, 2026·5 min read

Melanotan-1 Dosing: 250mcg 2x/Week Protocol

The FDA implant uses 16mg — community protocols use 250mcg. Covers loading, maintenance, UV timing, and reconstitution math.

Melanotan-1 Dosing: 250mcg 2x/Week Protocol

Melanotan-1 (afamelanotide) is a synthetic analog of alpha-MSH that stimulates melanin production for photoprotection. FDA-approved for erythropoietic protoporphyria (EPP) as a subcutaneous implant. Community protocols extrapolate from this clinical data. This is not medical advice.

Quick Reference: Standard Protocol

Parameter Detail
Dose 250 mcg per injection
Route Subcutaneous injection
Timing AM
Frequency 2 days/week (e.g., Mon/Thu)
Cycle 8 weeks on, 8 weeks off
Vial size 10 mg
Reconstitution 2 mL BAC water (5,000 mcg/mL)
Draw amount 5 units on insulin syringe
Storage Refrigerate, use within 28 days

UV exposure required — 15-30 minutes daily during loading phase. MT-1 amplifies UV response rather than independently darkening skin.

For the full Melanotan-1 peptide profile and vendor pricing, see our Melanotan-1 peptide page.

Cycling Details

A two-phase approach mirrors the natural tanning process:

Loading (Weeks 1-4): 250 mcg twice weekly with daily UV exposure (15-30 minutes, gradually increasing). This builds baseline melanin and photoprotective capacity.

Maintenance (Weeks 5-8): Continue 250 mcg twice weekly or reduce to once weekly, with regular UV to maintain tan.

This protocol mimics the natural seasonal pattern — building protection in spring, maintaining through summer (Langendonk et al., 2015). Many users run seasonally: 8-12 weeks before summer, or 4-6 weeks pre-vacation.

Routes of Administration

Subcutaneous (standard): Abdomen or love handle area. Rotate sites. Use 29-31 gauge insulin syringe. Volume is typically 0.05 mL per injection. Morning injections preferred.

Subcutaneous implant (clinical only): FDA-approved 16 mg biodegradable implant every 60 days for EPP patients. Not available for community use.

Not effective: Oral (degraded by stomach acid), nasal (no protocols), topical (molecule too large).

Reconstitution Quick Reference

Melanotan-1 Reconstitution Guide

Vial Size BAC Water Concentration 250 mcg Dose
10 mg 2 mL 5,000 mcg/mL 5 units

Math: 10,000 mcg / 2 mL = 5,000 mcg/mL. 250 mcg / 5,000 = 0.05 mL = 5 units. Swirl gently, refrigerate, protect from light, use within 28 days.

For step-by-step reconstitution instructions, see the BPC-157 reconstitution guide — same technique applies.

Where These Numbers Come From

Community dosing is extrapolated from FDA-approved clinical data and early trials.

Afamelanotide is FDA-approved for EPP at 16 mg subcutaneous implant every 60 days — roughly 2 mg/day of continuous release (Langendonk et al., 2015). Phase II trials in healthy volunteers used 0.16 mg/kg subcutaneous injections with dose-dependent skin darkening (Barnetson et al., 2006).

The community's 250 mcg twice weekly (0.5 mg/week, ~70 mcg/day equivalent) is conservative compared to clinical data (FDA implant ~14 mg/week). Lower community doses still work for melanogenesis when combined with UV exposure, while reducing side effects and preventing receptor desensitization.

Stacking Protocols

Stack MT-1 Dose Partner Partner Dose Purpose
UV exposure 250 mcg 2x/wk Gradual UV 10-30 min/day Essential combination
Antioxidants 250 mcg 2x/wk Astaxanthin + Vit C 4-8 mg + 1000 mg Photoprotection support

Do NOT stack with Melanotan-2 — adding MT-2 increases side effects without proportional benefits. MT-1's selectivity for MC1R is its advantage.

Side Effects & Safety

  • Injection site redness — lasting 30-60 minutes, mild
  • Mole/freckle darkening — gradual, may complicate skin cancer monitoring
  • Mild fatigue — uncommon, on injection days
  • Mild nausea — much less than MT-2
  • No nausea/vomiting at standard doses (MT-1 doesn't significantly activate MC4R)
  • No libido effects — limited CNS penetration unlike MT-2
  • No appetite suppression — doesn't affect feeding centers
  • Excessive UV caution — false confidence may lead to overexposure

Frequently Asked Questions

What is the standard Melanotan-1 dose?

250 mcg subcutaneously twice per week (e.g., Monday/Thursday) in the morning. Cycle 8 weeks on, 8 weeks off. Draw 5 units from a 10 mg vial with 2 mL BAC water.

Do I need UV exposure with Melanotan-1?

Yes — MT-1 amplifies melanin production in response to UV rather than independently darkening skin. Plan 15-30 minutes daily during loading.

How does Melanotan-1 compare to Melanotan-2?

MT-1 is more selective for MC1R — fewer side effects (no nausea, libido changes, or appetite suppression). Works more slowly and requires UV. MT-2 is more potent but has significant side effects. See our MT-1 vs MT-2 comparison.

How long should a Melanotan-1 cycle last?

8 weeks on, 8 weeks off. Loading takes 2-4 weeks, then maintenance through week 8. Many users run seasonally.

Is Melanotan-1 FDA-approved?

Yes, as afamelanotide for EPP — given as a 16 mg subcutaneous implant every 2 months. Community injection protocols extrapolate from this clinical data.

How do I reconstitute Melanotan-1?

Add 2 mL BAC water to a 10 mg vial (5,000 mcg/mL). 250 mcg = 5 units on insulin syringe. Swirl gently, refrigerate, use within 28 days.

References

Citation Topic PMID
Langendonk et al., N Engl J Med (2015) Phase III EPP trial, 16 mg implant safety and efficacy 25671236
Barnetson et al., Br J Dermatol (2006) Phase II injection studies, 0.16 mg/kg dosing 16865869
Harms et al., J Am Acad Dermatol (2009) MC1R selectivity, mechanism differences from MT-2 19329230
Grandi et al., Expert Opin Drug Deliv (2006) Pharmacokinetics and implant delivery system 16952734
Fabrikant et al., Dermatol Surg (2013) Melanocortin pathways and photoprotection mechanisms 23205654

For educational and research purposes only. This is not medical advice. Consult healthcare providers before using any peptide protocol.