Verified ComparisonLast updated: 16 April 2026
Best Peptides for Libido Research
Sexual-function peptides target melanocortin pathways; this overview ranks by mechanism specificity and research.
PT-141
Sexual Health
3.8/ 5
B+
Melanotan II
Cosmetic
3.7/ 5
B
Editor's note
PT-141 is selective for sexual function; melanotan II has broader melanocortin effects.
| Criterion | PT-141 | Melanotan II |
|---|---|---|
| Sexual function specificity | Selective (MC4-R) | Broader (melanin + other) |
| Research focus | Erectile and arousal | Pigmentation + sexual |
| Mechanism clarity | Focused | Systemic |
| Research literature | Growing | Moderate |
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