Vial to Units

NAD+ Calculator

Convert a dose of NAD+ into syringe units. Enter the vial size, the bacteriostatic water added and the dose on your prescription.

mg
mL

Enter the vial size and the water you added.

Arithmetic only. This tool does not recommend a dose; use the one your prescriber gave you.

About NAD+

NAD+ is nicotinamide adenine dinucleotide, a coenzyme. It is not a peptide, but it is sold in similar vials and the arithmetic is the same.

Not FDA-approved as a drug.

NAD+ concentration chart

Concentration for common vial sizes at 2, 5 and 10 mL of water, with the amount held in every 10 units of a U-100 syringe.

Vial2 mL water5 mL water10 mL water
100 mg50 mg/mL · 5 mg per 10 units20 mg/mL · 2 mg per 10 units10 mg/mL · 1 mg per 10 units
500 mg250 mg/mL · 25 mg per 10 units100 mg/mL · 10 mg per 10 units50 mg/mL · 5 mg per 10 units
1,000 mg500 mg/mL · 50 mg per 10 units200 mg/mL · 20 mg per 10 units100 mg/mL · 10 mg per 10 units

Units per 100 mg of NAD+

How many units on a U-100 syringe hold 100 mg, for each vial size and water volume. 100 mg is a round reference amount for scaling, not a dose: multiply or divide to match the dose on your prescription, or use the calculator.

Vial2 mL water5 mL water10 mL water
100 mg200 units · over 1 mL500 units · over 1 mL1,000 units · over 1 mL
500 mg40 units100 units200 units · over 1 mL
1,000 mg20 units50 units100 units

NAD+ dispensed as a liquid

Some pharmacies dispense NAD+ already in solution, with the concentration printed on the label as mg/mL. No water is added, so the label figure is the concentration. The rows below are example label concentrations; use the one on your vial. The columns show how much each syringe marking holds, and the marking that holds 100 mg, a round reference amount rather than a dose.

Label concentrationIn 1 unitIn 10 unitsIn 50 units100 mg =
50 mg/mL0.5 mg · 500 mcg5 mg25 mg200 units · over 1 mL
100 mg/mL1 mg10 mg50 mg100 units
200 mg/mL2 mg20 mg100 mg50 units

More concentrations: mg/mL to units chart.

Questions

How do I calculate NAD+ units on a syringe?

Divide the mg in the vial by the mL of water added to get mg/mL. Divide your prescribed dose by that figure for mL, then multiply by 100 for units on a U-100 syringe. For example, a 500 mg vial with 5 mL of water is 100 mg/mL, so every 10 units holds 10 mg.

How many units is 100 mg of NAD+?

It depends on the vial size and the water added. With a 500 mg vial, 100 mg is 40 units after 2 mL of water, 100 units after 5 mL of water, 200 units after 10 mL of water. The lookup table above covers the other vial sizes.

Is NAD+ measured in mg or mcg?

NAD+ vials are labelled in mg. If your prescription is written in mcg, divide by 1,000 to get mg, or switch the dose field to mcg. In a 500 mg vial mixed with 5 mL, one unit on the syringe holds 1 mg.

My NAD+ vial is already a liquid. How do I calculate units?

Use the mg/mL printed on the label. Divide the dose in mg by that figure for mL, then multiply by 100 for units. In the calculator, enter the mg/mL as the amount in the vial and 1 mL as the water. At 100 mg/mL, every 10 units holds 10 mg.

How much bacteriostatic water do I add to NAD+?

Follow the amount on your pharmacy label. The volume of water does not change how much NAD+ is in the vial; it only changes how many units a given dose takes up. Enter whatever amount was actually added.

What NAD+ dose should I enter?

The dose written on your prescription. This page converts a dose into syringe units and does not recommend one.

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