PT-141 10 mg vial
How much bacteriostatic water to add to a 10 mg vial of PT-141, the syringe units for each common dose, and how many doses the vial holds.
- Water
- 2 mL
- Strength
- 5 mg/mL
- Common dose
- 1.75 mg
- Draw
- 35 units0.35 mL
- Doses per vial
- 5
The short answer
Mixed with 2 mL of bacteriostatic water, a 10 mg vial of PT-141 holds 5 mg/mL. A 1.75 mg dose is then 35 units (0.35 mL) on a U-100 insulin syringe, and the vial holds about 5 doses of that size.
How much water
The water only sets the strength; the dose and the number of doses in the vial stay the same. Draws are on a U-100 insulin syringe, where 1 unit is 0.01 mL.
| Water added | Strength | Per syringe unit | Draw for 1.75 mg |
|---|---|---|---|
| 1 mL | 10 mg/mL | 100 mcg | 17.5 units (0.17 mL) |
| 2 mL | 5 mg/mL | 50 mcg | 35 units (0.35 mL) |
| 3 mL | 3.333 mg/mL | 33.3 mcg | 52.5 units (0.53 mL) |
Dose chart
Syringe units for each common dose at each water volume. Select a cell to open it in the calculator.
| Dose | Water added | ||
|---|---|---|---|
| 1 mL | 2 mL | 3 mL | |
| 1 mg | |||
| 1.5 mg | |||
| 1.75 mg | |||
Draws over 100 units show in mL. Faded values are under 2 units, which is hard to measure. Check that your vial holds the larger volumes.
Where the doses come from
- Label 1.75 mg at least 45 minutes before sexual activity. No more than 1 dose in 24 hours or 8 doses a month.
- Community Off-label users often start at 1 mg to gauge nausea.
Doses are what labels, trials or community reports reference, not recommendations. PT-141’s page has the cycle, side effects, cautions and sources.
Mixing and storage
- PrepareLet a refrigerated vial come to room temperature, and wipe both stoppers with an alcohol swab.
- Add 2 mLDraw 2 mL of bacteriostatic water and let it run slowly down the inside wall of the vial.
- Swirl, don’t shakeSwirl gently until the powder dissolves and the liquid is clear.
- Label itWrite the date and the strength, 5 mg/mL, on the vial.
Storage: Mixed: 2–8 °C, protected from light.
The reconstitution guide covers each step, and the units page explains syringe markings.
Questions
How much water do I add to a 10 mg vial of PT-141?
There’s no single right amount: the water only sets the strength. With 2 mL of bacteriostatic water, a 10 mg vial holds 5 mg/mL. With 1 mL it’s 10 mg/mL; with 3 mL it’s 3.333 mg/mL. Less liquid makes each dose a smaller draw; more makes small doses easier to measure.
How many units is 1.75 mg of PT-141?
With 2 mL in a 10 mg vial, 1.75 mg is 35 units (0.35 mL) on a U-100 insulin syringe. With 1 mL, 17.5 units (0.17 mL); with 3 mL, 52.5 units (0.53 mL).
How many doses are in a 10 mg vial of PT-141?
About 5 doses of 1.75 mg, or 10 of 1 mg or 6 of 1.5 mg.
How long does a mixed vial of PT-141 keep?
Mixed: 2–8 °C, protected from light.
Sources
- Vyleesi (bremelanotide) label (DailyMed)
The math on this page uses the doses and storage on PT-141’s page.