Beginner setup
Vial sizes vary by vendor. Smaller bottles are usually 3 mL; larger bottles are often 10 mL. Match the label on the vial you actually bought, then use the calculator below if you need to adjust.
Vial strength 10 mg
Bottle format often 3 mL
BAC water 3 mL
Concentration 3.33 mg/mL
Overview
PT-141 (bremelanotide) is a melanocortin receptor agonist that drives sexual arousal through the brain — no vascular mechanism like a PDE5 inhibitor. The FDA-approved on-demand dose is 1.75 mg SC; research protocols titrate lower.
Preparation
Recon: 10 mg vial + 3 mL BAC (3.33 mg/mL).
Protocol
| Period | Dose | Units (@ 3.33 mg/mL) | Frequency |
|---|---|---|---|
| Weeks 1–8 | 500 mcg (0.5 mg) | 15 units (0.15 mL) | 1x/day |
| Weeks 9–12 | 1,000 mcg (1.0 mg) | 30 units (0.30 mL) | 1x/day |
| Weeks 13–16 | 1,500 mcg (1.5 mg) | 45 units (0.45 mL) | 1x/day |
Cycle
Up to 16-week titrations for daily protocols. For on-demand use, the approved single 1.75 mg dose before activity is the reference. Nausea is the dose-limiting side effect — start low.