PeptideNerds

Best peptides for sexual health

Peptides that support libido, erectile function, and sexual performance through neurological and vascular pathways.

What to know

PT-141 (bremelanotide/Vyleesi) is FDA-approved for hypoactive sexual desire disorder in women and used off-label for male sexual dysfunction. It works through melanocortin receptors in the brain — a fundamentally different mechanism than PDE5 inhibitors (Viagra/Cialis). Nausea is the main side effect. GH peptides indirectly support sexual health through improved hormone balance and energy. Kisspeptin is emerging as a research peptide for sexual arousal.

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Reviewed by Fat Man in the Arena · Updated March 2026