How to Use This Calculator:
1. Look at your peptide vial to find out how many milligrams (mg) of powder it contains. This is usually printed on the label (e.g., 5mg, 10mg, 30mg).
2. Determine how much sterile water (bacteriostatic or saline) you’re adding to the vial. A standard vial is 3.5mL, but you can use 1–3mL depending on how concentrated you want it.
3. Enter your desired dose — either in mg or mcg (micrograms). This is the amount you want to draw per injection.
4. The calculator will tell you how much to draw in mL and in insulin syringe units (U100 scale).
Peptide Dosage Calculator
This is the total amount of powder in the vial. How much bacteriostatic water or saline you’re adding. How much of the peptide you want per dose.Common Peptide Dosing Reference
| Peptide | Typical Vial Size | Starting Dose | Common Protocol |
|---|---|---|---|
| Semaglutide | 5mg / 10mg | 0.25mg weekly | 0.25mg → 1mg weekly |
| Tirzepatide | 2.5mg / 5mg | 2.5mg weekly | 2.5 → 10mg weekly |
| Retatrutide | 30mg | 0.5mg to 1mg weekly | 0.5 → 3mg+ weekly (trial phase) |
| BPC-157 | 5mg | 200–250mcg daily | 250mcg 1–2x/day |
| TB-500 | 2mg / 5mg | 2–5mg weekly | Weekly or biweekly, then monthly |