Vial Supply Calculator

Totals for the FDA-label escalations

Worked totals for the first four four-week steps of each label schedule we reproduce (four weekly uses per step). They show the arithmetic, not a recommendation.

Worked example

Example: 10 mg vial, 0.25 mg per draw → 10 ÷ 0.25 = 40 draws.

How it works

1. 1. Enter vial content

   Total amount in the vial, in mg.

2. 2. Enter amount per draw

   The amount removed each time, in mg.

3. 3. Divide and round down

   Draws = vial mg ÷ mg per draw, rounded down to a whole number. Real-world dead space reduces this.

Frequently asked questions

Sources

1. Reconstitution, units and concentration arithmetic: see our lab-handling guide, The Peptide Directory

Label and trial dose references

For doses as printed in FDA labels or used in trials, see the peptide dose reference and the protocol pages.

Related tools

• Reconstitution CalculatorA 10 mg lyophilized vial reconstituted with 2 mL of diluent has a concentration of 5 mg/mL.
• Peptide CalculatorA 10 mg vial with 2 mL of diluent is 5 mg/mL, so 0.25 mg occupies 0.05 mL — 5 units on a U-100 syringe.
• Titration Vial PlannerFour steps of 4 uses at 0.25, 0.5, 1 and 1.7 mg total 13.8 mg, which is two 10 mg vials (rounded up).
• Units ConverterAt 2.5 mg/mL, 0.5 mg is 0.2 mL — 20 units on a U-100 syringe.
• Semaglutide Units ConverterAt a concentration of 2.5 mg/mL, 0.25 mg of semaglutide is 0.1 mL, which is 10 units on a U-100 syringe.
• Tirzepatide Units ConverterAt 10 mg/mL, 2.5 mg of tirzepatide is 0.25 mL, which is 25 units on a U-100 syringe.
• Semaglutide Reconstitution CalculatorA 5 mg semaglutide vial reconstituted with 2 mL of diluent has a concentration of 2.5 mg/mL.
• Tirzepatide Reconstitution CalculatorA 30 mg tirzepatide vial reconstituted with 3 mL of diluent has a concentration of 10 mg/mL.
• Retatrutide CalculatorA 10 mg retatrutide vial with 2 mL of diluent is 5 mg/mL, so 1 mg is 0.2 mL — 20 units on a U-100 syringe.
• BAC Water CalculatorTo make 5 mg/mL from a 10 mg vial, add 2 mL of bacteriostatic water (10 ÷ 5 = 2).