How to calculate peptide dosage

Divide the vial amount (mg) by the water you added (mL) to get the concentration in mg/mL. Then divide your dose (converted to mg) by that concentration to get the volume to draw in mL. Multiply by 100 for units on a standard 100-unit insulin syringe. Our calculator does each step for you.

It is the concentration: how many milligrams of compound are dissolved in each millilitre of liquid. A 10 mg vial mixed with 2 mL of bacteriostatic water gives 5 mg/mL.

A 100-unit (1 mL) insulin syringe holds 1 mL, so 1 unit equals 0.01 mL. Divide your dose in mg by the vial's mg/mL concentration, then multiply by 100. Example: 10 mg in 3 mL gives 3.33 mg/mL; a 333 mcg (0.333 mg) dose is 0.1 mL, or 10 units.

Divide micrograms by 1,000. 250 mcg equals 0.25 mg, 500 mcg equals 0.5 mg, and 1,000 mcg equals 1 mg.

Published study protocols and research references describe a range of mixing volumes; the amount you add simply changes the concentration. More water means a larger, easier-to-measure draw per dose. Enter whatever volume you used into the calculator and it returns the correct draw.

Divide the total vial amount in mg by your dose in mg. A 10 mg vial at a 0.25 mg dose contains 40 doses. The calculator shows doses per vial automatically.

Each compound page lists what published studies, official labelling and research references report, with citations to PubMed, ClinicalTrials.gov and DailyMed. They describe what the literature reports — they are not recommendations.

No. Research Syndicate is not a medical provider. The calculator only converts the numbers you enter — vial size, water volume and dose — into concentration, volume and syringe units. Dosing decisions belong with a qualified professional.