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Melanotan-2 Research Review: Dosing and Outcome Comparison

Photoprotection (Levine et al., 1998) 0.025 mg/kg SC 3×/week × 4 weeks Minimal erythema dose (MED) increase 2–3× MED increase; 5–6 Pantone units darker Nausea (60–70%), flushing (40%), spontaneous erections (males, 30%) Effective photoprotection in Type I/II s

This comparison does not assign a generated winner or score.

  • Photoprotection (Levine et al., 1998)
  • 0.025 mg/kg SC 3×/week × 4 weeks
  • Minimal erythema dose (MED) increase
  • 2–3× MED increase; 5–6 Pantone units darker
  • Nausea (60–70%), flushing (40%), spontaneous erections (males, 30%)
  • Effective photoprotection in Type I/II skin; nausea limits adherence
  • Obesity/Appetite (Greenway et al., 2009)
  • 0.025 mg/kg SC daily × 14 days
  • Ad libitum caloric intake reduction
  • 15–22% intake reduction; 1.8 kg weight loss vs 0.3 kg placebo
  • Nausea (50%), decreased libido (reported but not quantified)
  • Significant appetite suppression; short trial duration limits long-term inference
  • Erectile Dysfunction (Wessells et al., 2000)
  • 0.0125–0.025 mg/kg SC 2–8 hrs pre-activity
  • Erectile function score improvement
  • 80% successful intercourse vs 20% placebo
  • Nausea (50–60%), facial flushing (50%), yawning (30%)
  • Clear efficacy in psychogenic ED; tolerability concerns for routine use
  • Pigmentation Maintenance (Dorr et al., 2000)
  • 1.0 mg SC every 72–96 hrs post-loading
  • Sustained pigmentation without UV
  • Stable pigmentation maintained; 4–8 week fade post-cessation
  • Minimal after loading phase; occasional nausea (<10%)
  • Intermittent dosing sustains effect; aligns with receptor kinetics
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Limitations of This Comparison

Several structural limitations constrain everything above, and honest readers should keep them in view: No head-to-head data. Comparing the two requires stitching together studies…

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