Tirzepatide Dosage Calculator
Tirzepatide is supplied lyophilized, most commonly in 10 mg, 15 mg, or 30 mg vials. Enter the vial strength and the volume of bacteriostatic water you plan to add to convert any milligram target into an exact U-100 syringe reading.
- Concentration
- 5000 mcg / mL
- Concentration
- 5.00 mg / mL
- Per syringe unit
- 50.0 mcg / unit
- Draws per vial
- 4.0
- Total solution
- 200 units
Every figure below is arithmetic performed in your browser. Nothing here is a protocol, recommendation, or medical guidance — all Ares Research materials are supplied for in-vitro laboratory research only.
HPLC purity and mass-spec identity confirmation, published per batch. US-based tracked shipping.
Concentration by vial strength
In 2 mL of bacteriostatic water, a 10 mg vial yields 5 mg/mL, a 15 mg vial yields 7.5 mg/mL, and a 30 mg vial yields 15 mg/mL. At 5 mg/mL, a 2.5 mg draw is 0.5 mL — 50 units. At 15 mg/mL the same 2.5 mg is only 0.167 mL, about 17 units, where a one-unit error represents a larger share of the draw.
Matching diluent volume to vial strength
Higher-strength vials generally warrant more diluent to keep readings in an accurate range. A 30 mg vial in 3 mL gives 10 mg/mL, putting a 2.5 mg draw at 25 units — a much easier mark to hit than the 17 units the same vial gives in 2 mL. The total peptide available is identical either way.
Handling notes
Add bacteriostatic water down the vial wall and let the lyophilized cake dissolve without shaking. Refrigerate the vial once reconstituted and keep it out of direct light. Record the mg/mL concentration on the vial label so the syringe reading remains reproducible after the vial has been in storage.
Frequently asked questions
How many units is 2.5 mg of Tirzepatide?
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With a 10 mg vial reconstituted in 2 mL, the concentration is 5 mg/mL, so 2.5 mg is 0.5 mL — 50 units on a U-100 insulin syringe. A 30 mg vial in the same 2 mL gives 15 mg/mL, where 2.5 mg is about 17 units.
How much bacteriostatic water for a 30 mg Tirzepatide vial?
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3 mL is a common choice because it produces 10 mg/mL, which keeps typical milligram draws between roughly 10 and 50 units on the barrel. Using only 1 mL produces 30 mg/mL, where small draws fall into single-digit unit readings and measurement error rises sharply.
How many doses are in a 10 mg Tirzepatide vial?
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A 10 mg vial holds four 2.5 mg draws, two 5 mg draws, or one 10 mg draw. This depends only on the target amount, not on how much bacteriostatic water was used.
How should reconstituted material be stored?
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Once reconstituted, most research peptides are held refrigerated at roughly 2–8°C, protected from light, in the original sealed vial. Bacteriostatic water contains 0.9% benzyl alcohol, which suppresses microbial growth in the diluent. Temperature, light exposure, and repeated freeze-thaw cycles all affect stability, so consult the compound-specific certificate of analysis and published stability data.
How do I read a U-100 insulin syringe?
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A U-100 barrel is graduated in units where 100 units equal 1 mL, so each single-unit mark is 0.01 mL. To convert a volume in mL to units, multiply by 100 — 0.25 mL is 25 units. This calculator reports both figures so you can cross-check the mark against the volume.
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