Reconstitution calculator

Three numbers from your vial and your prescription. The draw comes back in syringe units on a graduated gauge, with the math underneath. Nothing you type leaves this page.

Powder amount printed on the vial

Bacteriostatic water you add

Amount per dose, from your prescription

The syringe in your hand (number at the top of the barrel)

Using a U-40 syringe? (40 units per mL instead of 100)

Draw to

—

Fill in the three numbers on the left.

Show the math

Math check only. Confirm every dose with your prescriber or pharmacist. PeptideUp never suggests an amount; you type what your prescription says.

How it works

Concentration is the powder divided by the water: 10 mg in 2 mL is 5 mg in every mL.

Draw volume is your dose divided by that concentration: a 0.25 mg dose is 0.05 mL.

Syringe units are the volume times the syringe scale: on a U-100 syringe, 0.05 mL is 5 units. A U-40 syringe has 40 units per mL, so the same volume reads 2 units.

Doses per vial counts the draws that fit in the water you added, minus a little that always stays at the bottom.

Push the water in slowly against the inside glass wall, then tilt and swirl gently. Never shake. Mixed vials belong in the fridge at 36–46°F and keep for 28 days.

This calculator lives on the web only. PeptideUp for iPhone keeps the numbers you were given, counts the doses left in each vial and runs its 28-day clock; it does not calculate doses or units.