Quick math example
A 10 mg vial mixed with 2 mL gives 5 mg/mL. A 1.75 mg dose is 0.35 mL, which equals 35 units on a U-100 syringe.
How the PT-141 calculation works
PT-141 is labelled in milligrams per vial. Concentration is the total mg divided by BAC water volume; the per-dose volume is your target divided by that concentration.
Doses are typically in the milligram range, so draws can approach a meaningful fraction of a 1 mL syringe.
- 10 mg vial = 10,000 mcg total
- 10,000 mcg / 2 mL = 5,000 mcg per mL
- 1,750 mcg target = 0.35 mL draw
Approval and prescribing context
PT-141 is sold under different statuses by jurisdiction. Some markets have an approved formulation with specific dosing; others treat it as a research compound. The calculator math does not change, but your source and prescribing context might.
Frequently asked questions
Is PT-141 approved as a medicine?+
It is approved in some jurisdictions under specific conditions and not in others. This page only explains calculator math and does not make treatment recommendations.
Why does PT-141 require a relatively large draw volume?+
PT-141 doses are in the milligram range, so even at 5 mg/mL the per-dose volume is several tenths of a millilitre. You can reduce draw volume by using less BAC water during reconstitution.
Can PepSync remind me of a PT-141 dose schedule?+
Yes. The app supports protocol-level reminders so the calculated draw amount and timing stay tied together.