How PT-141 works
PT-141 activates melanocortin receptors (specifically MC1R and MC4R) in the central nervous system. This mechanism is different from every other commonly used medication for sexual dysfunction:
- PDE5 inhibitors (Viagra, Cialis, Levitra) work by relaxing blood vessels in the genitals - they require sexual stimulation to work and depend on vascular function
- PT-141 works at the level of the brain to increase sexual desire and arousal, and can produce effects in men and women through a vascular-independent pathway
This distinction matters for patients who have not responded well to PDE5 inhibitors, including some men with nerve-related erectile dysfunction or those who find vascular-dependent medications insufficient.
FDA approval status
PT-141 (bremelanotide) is FDA-approved as Vyleesi for premenopausal women with acquired, generalized hypoactive sexual desire disorder (HSDD). This was approved in 2019.
Off-label prescribing for men is legal in the US - physicians can prescribe any FDA-approved medication off-label when they believe it is appropriate for a specific patient. Many men's health and sexual health clinics offer PT-141 specifically for this purpose.
Compounded versions of bremelanotide are also available through 503A compounding pharmacies when prescribed by a licensed physician. These are lower cost than the branded Vyleesi and are the form most commonly used in men's health programs.
What to expect from PT-141
PT-141 is typically administered as a subcutaneous injection 45-60 minutes before anticipated sexual activity. Some clinics also offer it as a nasal spray.
Reported effects in clinical trials and patient experience include:
- Increased sexual desire and arousal (both men and women)
- Improved erectile response in men, including some who do not respond to PDE5 inhibitors
- Effects that begin within 45-60 minutes and last 8-12 hours
Common side effects: Nausea (most common - occurs in a significant proportion of patients, often manageable with lower doses), flushing, transient blood pressure changes (both increases and decreases). For this reason, cardiovascular assessment is important before prescribing.
Important: PT-141 should not be used more than once every 24 hours and should not be combined with nitrate medications or other medications that affect blood pressure without medical supervision.
Who may not be suitable for PT-141
PT-141 causes transient changes in blood pressure. Patients with the following should discuss this specifically with their physician before use:
- Uncontrolled hypertension
- Cardiovascular disease
- Current use of antihypertensive medications
- High cardiovascular risk
A prescribing physician should review your full health history before recommending PT-141.
How to get a PT-141 prescription in the US
Because PT-141 is FDA-approved (as Vyleesi), it can be prescribed through a standard physician consultation. For men, this will be an off-label prescription, which is entirely legal.
A legitimate consultation for PT-141 should include:
- 1A full health history including cardiovascular and medication history
- 2A discussion of your specific situation and whether PT-141 is appropriate
- 3Information about the mechanism, side effects, and proper use
- 4A prescription for either branded Vyleesi or compounded bremelanotide
- 5Instructions on dosing, timing, and what to do if side effects occur
Telehealth prescribing is available for PT-141 at many clinics across the US, making it accessible without requiring an in-person visit.
Cost considerations
- Branded Vyleesi: Approximately $800-1,000 for a pack of injectors without insurance. Some insurance covers it for women with HSDD; rarely covered for off-label male use.
- Compounded bremelanotide: Typically $100-300 per month depending on dose and supplier, through a licensed compounding pharmacy.
Find clinics offering PT-141 and sexual health programs across the US. Browse by state: Texas - California - Florida - New York - Arizona - browse all US clinics.