Epitalon Reconstitution Calculator
For Epitalon. Enter what is in the vial, how much bacteriostatic water you add and your dose. You get the number of units to draw on a U-100 insulin syringe, with the math shown below.
What 10 units of Epitalon holds
On a U-100 syringe, 10 units is 0.1 mL. How much Epitalon that is depends on the vial size and the water you add:
| 1 mL water | 2 mL | 3 mL | |
|---|---|---|---|
| 10 mg vial | 1 mg | 0.5 mg | 0.333 mg |
| 50 mg vial | 5 mg | 2.5 mg | 1.667 mg |
This is arithmetic, not a dose. Put your own dose in the calculator above.
The Reconstitution Guide
A plain-English handbook: mixing a vial step by step, storage and how long a mixed vial lasts, rotating injection sites, reading a certificate of analysis, and what the research actually shows for each peptide.
Coming soon.
How the math works
Three steps, the same for every peptide:
- Concentration = mg in the vial ÷ mL of water.
- Volume of one dose = dose in mg ÷ concentration.
- Units = volume in mL × 100 (on a U-100 syringe, 100 units = 1 mL).
Example: a 5 mg vial with 2 mL of water is 5 ÷ 2 = 2.5 mg/mL. A 250 mcg dose is 0.25 mg, so 0.25 ÷ 2.5 = 0.1 mL, which is 10 units. The vial holds 5 ÷ 0.25 = 20 doses.
Common questions
Does the amount of water change the dose?
No. The water only changes how concentrated the vial is, so it changes how many units one dose takes up. More water means more units for the same dose, which makes small doses easier to measure. Less water means a smaller volume per dose.
What does U-100 mean?
U-100 insulin syringes are marked so that 100 units equal 1 mL. A 0.3 mL syringe holds 30 units, a 0.5 mL syringe 50 units and a 1 mL syringe 100 units. The 0.3 and 0.5 mL sizes are usually marked every unit; 1 mL syringes every 2 units.
mcg or mg?
1 mg is 1,000 mcg. Mixing them up is the most common reconstitution mistake: 250 mcg is 0.25 mg, not 250 mg. The calculator refuses a dose bigger than the whole vial, which is what usually happens when the unit is wrong.
Why does my answer have a decimal?
Syringes are only marked in whole units (or every 2 units), so a dose like 12.5 units has to be estimated between the marks. Changing the amount of water can make the dose land on a mark.