Free tool

PT-141 Dosage Calculator

PT-141 (bremelanotide) is a peptide people use for libido and arousal. This tool does the reconstitution and syringe-unit math for the numbers you enter.

Draw to
20units
0255075100 20u
Quick fill
mg
mL
mg
Concentration5.00 mg/mL
Draw0.200 mL
Doses / vial10

Informational only. Not medical advice. Always double-check every dose with a licensed provider.

PT-141 example

A 10 mg vial with 2 mL of water is 5.00 mg/mL. A 1 mg dose is 0.20 mL, which reads as 20 units on a U-100 syringe, and the vial holds 10 doses. These are example numbers, change them to yours.

Questions

PT-141, frequently asked

How do I calculate a PT-141 dose?

Divide the PT-141 in the vial (mg) by the bacteriostatic water you added (mL) to get the strength in mg/mL. Divide your target dose by that strength to get the mL to draw, then multiply by 100 for the units on a U-100 syringe. For example, a 10 mg vial with 2 mL of water is 5.00 mg/mL, so a 1 mg dose is 0.20 mL, which is 20 units.

How much bacteriostatic water do I add to a PT-141 vial?

That is your choice, and it only changes the strength, not how much PT-141 you have. More water makes it weaker (more units per dose); less water makes it stronger. This tool shows the units for whatever amount you enter.

How many units of PT-141 do I draw?

It depends on your vial strength and your dose. With the example above (10 mg in 2 mL, 1 mg dose) you would draw 20 units on a U-100 syringe. Enter your own numbers to see yours.

Is PT-141 FDA approved?

It depends on the exact product. Some peptides and GLP-1 medicines are FDA approved and some are not. See our plain guide on what peptides are FDA approved.

Read next

Guides that go with this

How to reconstitute a peptide → Does bacteriostatic water need the fridge? → What peptides are FDA approved? →
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Track it, don't just calculate it

Preptide saves your vials, logs every dose, and tracks your progress. Coming to the App Store.