4 Peptides

Best Peptides for Libido & Sexual Health

Peptides researched for sexual desire, arousal, erectile function, and reproductive health.

4Total Options

2FDA Approved

Understanding Libido & Sexual Health Peptides

Sexual health peptides target the brain and hormonal pathways involved in desire and arousal. PT-141 (Bremelanotide) is FDA-approved for hypoactive sexual desire disorder in women and works by activating melanocortin receptors in the brain. Melanotan II has similar effects plus tanning properties but is not FDA approved. Kisspeptin plays a crucial role in reproductive hormone regulation and has shown effects on sexual arousal in clinical studies. These peptides offer a different approach than PDE5 inhibitors (Viagra) by addressing desire rather than just mechanics.

Key Considerations

PT-141 is the only FDA-approved peptide specifically for sexual desire
Melanotan II has sexual side effects but is not approved for this use
These peptides work on desire/arousal - different from erection medications
Nausea is a common side effect of melanocortin receptor agonists
Underlying hormonal issues should be addressed first

FDA Approved Options (2)

PT-141

FDA Approved

Also: Bremelanotide, Vyleesi

PT-141, generic name bremelanotide and sold as Vyleesi, is a melanocortin peptide and a cyclic analog of alpha-MSH that works in the brain to boost sexual desire. It is genuinely FDA approved: in June 2019 it became the first on-demand treatment for acquired, generalized hypoactive sexual desire disorder (HSDD) in premenopausal women. It is also used off-label for low libido and erectile dysfunction in men.

Typical Dosing

1.75 mg as needed

Sexual HealthView Details

Melanotan I

FDA Approved

Also: Afamelanotide, Scenesse, MT-1

Melanotan I is the research name for afamelanotide, a 13-amino-acid synthetic analog of alpha-melanocyte-stimulating hormone (alpha-MSH), also written as [Nle4, D-Phe7]-alpha-MSH or NDP-MSH. It is the only melanocortin peptide with regulatory approval: sold as Scenesse, it was approved by the EMA in 2014 and the FDA in 2019 to increase pain-free light exposure in adults with erythropoietic protoporphyria (EPP). It is given as a 16 mg bioresorbable implant under the skin by a clinician, not as a tanning shortcut.

Typical Dosing

500-1000 mcg daily (loading), then 500-1000 mcg 1-2x weekly (maintenance)

Skin & HairView Details

Research Peptides (2)

These peptides are being researched but are not FDA approved. They should only be considered for research purposes or under medical supervision.

Melanotan II

Research

Melanotan II is a synthetic copy of alpha-melanocyte-stimulating hormone (alpha-MSH), nicknamed the tanning peptide because it darkens skin without much sun. It also triggers erections and can blunt appetite, which is why it became the template for the FDA-approved drug bremelanotide (PT-141). Melanotan II itself is not approved by the FDA or EMA and is sold only as an unregulated research chemical.

Sexual HealthLearn more

Kisspeptin

Clinical Trials

Kisspeptin is the master switch that tells your brain to start reproduction. It is a family of peptides (the full length is kisspeptin-54, with shorter active fragments KP-14, KP-13, and KP-10) made from the KISS1 gene, and it acts as the upstream trigger for the entire reproductive hormone cascade. It is not an approved drug, but it has been tested in real human trials for fertility, hypothalamic amenorrhea, and male hypogonadism, with promising early results.

HormonalLearn more

Frequently Asked Questions

What is the best peptide for libido?

PT-141 (Bremelanotide/Vyleesi) is the only FDA-approved peptide for sexual desire, specifically for hypoactive sexual desire disorder in women. It activates melanocortin receptors in the brain to increase desire. Melanotan II has similar but unapproved effects.

How does PT-141 work?

PT-141 activates melanocortin-4 receptors (MC4R) in the brain, which are involved in sexual arousal and desire pathways. Unlike Viagra which works on blood flow, PT-141 works on the central nervous system to increase psychological desire.

Can men use PT-141?

Yes, while FDA-approved only for women, PT-141 has shown effects on male sexual function in clinical trials including improvements in erectile function. It's sometimes used off-label for men who don't respond well to PDE5 inhibitors.