Sexual Health & Melanocortin

Melanocortin-receptor agonists — libido, erectile function and tanning.

3 compounds

Sexual Health

Human trials

Melanotan I

MT-1 · MT-I

Tanning-focused melanocortin agonist — the pigment of MT-II with far less nausea or erections.

Dose: 250–1000 mcg
Frequency: Daily during the 10-14 day loading phase, then 1-2x weekly for maintenance
Half-life: 1 h

Sexual Health

Early human

Melanotan II

MT-2 · MT-II

Non-selective melanocortin agonist for deep tanning, with libido and nausea along for the ride.

Dose: 100–1000 mcg
Frequency: Daily during the loading phase, then 1-2x weekly for maintenance
Half-life: —

Sexual Health

Human trials

PT-141

Bremelanotide · Vyleesi

Melanocortin agonist that works on desire in the brain rather than blood flow in the penis.

Dose: 0.5–2 mg
Frequency: As needed, no more than once in 24 hours and no more than 8 doses per month
Half-life: 2.7 h

Other classes

Growth Hormone GH Secretagogues Growth Factors Fat Loss & Metabolic Healing & Recovery Immune & Inflammation Nootropic & Neuro HPTA & Fertility Longevity & Mitochondrial

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This database is an educational reference, not medical advice and not a recommendation to use anything on it. The majority of these compounds are not approved for human use in any jurisdiction and are sold for laboratory research only. Purity, dosing accuracy and even identity vary enormously between suppliers.

Every dose shown is what published studies and long-running community practice report — a starting point for understanding, not a prescription. Interactions, contraindications and individual response are real. Get bloodwork, tell your doctor what you are actually taking, and never let a calculator override a clinician.

The calculator does arithmetic on the numbers you give it. It cannot know whether your vial is really 10 mg, whether your water is sterile, or whether the dose you typed is sane. Check every result before it becomes an injection.