PT-141

PT-141, also known as Bremelanotide or by its brand name Vyleesi, is a melanocortin peptide that works through the central nervous system to increase sexual desire and arousal. It is distinct from medications like sildenafil (Viagra) that work by increasing blood flow - PT-141 acts in the brain to generate desire itself. How it works: PT-141 is a melanocortin agonist. Melanocortin receptors in the brain play a role in regulating sexual motivation and arousal. By activating these receptors centrally, PT-141 increases sexual desire rather than simply facilitating the physical mechanics of arousal. Who tends to use it: PT-141 is used by both men and women seeking to improve libido and arousal. It is FDA-approved for premenopausal women under the Vyleesi brand and is used off-label in men. Women often start at the lower end of the dose range. Its primary goal is libido, with no other goals listed. What to expect: PT-141 is an on-demand peptide rather than something taken daily. Effects typically begin around 45 minutes after administration and it is used before anticipated sexual activity, no more than approximately twice per week. How it is taken: PT-141 can be given by subcutaneous injection or intranasally. The general dose range is 0.5-1.75 mg, taken approximately 45 minutes before activity, with a maximum frequency of about twice per week. Safety notes: The most common side effects are nausea and a temporary rise in blood pressure. PT-141 is not appropriate for people with uncontrolled hypertension. It is excluded for use during pregnancy. It pairs with oxytocin and kisspeptin-10 in some protocols. The right dose, route, and whether PT-141 is appropriate for your situation are determined at a PepDepo consultation.