NAD+ 250 mg reconstituted with 2 mL
Concentration
125mg/mL
- Per insulin unit
- 1250 mcg
- Solution in vial
- 200 u
- 100 mg draw
- 80 u
Math utility only — not medical advice. Not a recommended dose.
Units per dose at 125 mg/mL
Insulin syringes are graduated in hundredths of a millilitre, so units = mL × 100 on a U-100, U-50 or U-30 barrel alike.
| Dose | Volume | U-100 units | Fits | Doses per vial |
|---|---|---|---|---|
| 50 mg | 0.4 mL | 40 u | U-50 | 5 |
| 100 mg | 0.8 mL | 80 u | U-100 | 2 |
How this is calculated
1 · Concentration
250 mg ÷ 2 mL = 125 mg/mL
The peptide mass never changes — bacteriostatic water only sets how concentrated the solution is, and therefore how far the plunger travels.
2 · Volume for a 100 mg dose
100 mg ÷ 125 mg/mL = 0.8 mL
3 · Insulin units
0.8 mL × 100 = 80 units
Every unit on the barrel carries 1250 mcg at this concentration, so misreading by one unit is a 1250 mcg error.
See it on a real syringe
The interactive calculator draws this 125 mg/mL mix on a scaled U-100 barrel, shows when a draw lands exactly on a printed tick, and works backwards from a target dose to the water volume that makes it land cleanly.
Open the interactive calculator →Common questions
- How much bacteriostatic water for a 250 mg NAD+ vial?
- Adding 2 mL of bacteriostatic water to a 250 mg NAD+ vial yields 125 mg/mL — 1250 mcg in every insulin unit. The reconstituted vial holds 200 units of solution in total.
- How many units is a 100 mg dose of NAD+ at 250 mg in 2 mL?
- 100 mg is 0.8 mL of this mix, which is 80 units on a U-100 insulin syringe (a U-100 barrel is enough).
- How many 100 mg doses does a 250 mg vial give?
- A 250 mg vial contains 2 full 100 mg doses. Using more or less bacteriostatic water changes the units you draw, never the number of doses in the vial.