PT-141 Calculator
Bremelanotide
Reconstitution math and as-needed dose volume for the libido peptide
PT-141 (Bremelanotide) is a melanocortin agonist used for on-demand sexual wellness in both men and women. Standard protocols dose 1 mg subcutaneously 45 to 60 minutes before activity. Because PT-141 is dosed as-needed rather than on a daily schedule, vials last several months at typical use. The calculator below handles the math.
- Built by licensed providers
- Free forever
- Preset loaded
Interactive PT-141 reconstitution and dose calculator
Worked example — PT-141 1 mg dose
A typical reconstitution and dose calculation for PT-141, with every variable spelled out. The calculator above runs the same math live as you change inputs.
- Vial strength
- 10 mg
- Bacteriostatic water
- 2 mL
- Concentration
- 5.00 mg/mL
- Dose volume
- 0.2 mL · 20 units
A 10 mg PT-141 vial reconstituted with 2 mL of bacteriostatic water yields 5 mg/mL. A 1 mg dose is 0.20 mL — 20 units on a U-100 insulin syringe. A 10 mg vial provides 10 doses; some patients start at a lower 0.5 mg dose to test tolerance for nausea.
PT-141 dosing FAQs
Answers to the questions patients and clinicians ask most often about PT-141.
Related peptide calculators
Pre-loaded calculators for peptides commonly stacked or compared with PT-141.
Need a PT-141 protocol from a licensed provider?
The calculator handles the math. A licensed CULTR Health provider reviews your goals, lab history, and current medications before prescribing a peptide protocol that fits you. Telehealth visits are available only to eligible patients physically located in Florida.
This PT-141 calculator is an educational tool. It does not replace medical advice, prescription, or supervision. Compounded peptides are dispensed only by licensed 503A and 503B pharmacies under a valid prescription.