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NAD+ Reconstitution Calculator

NAD+ is the outlier: vials are 500 to 1,000 mg and entries are tens of milligrams, so you need far more water than a peptide vial and often a 100U syringe. Presets are set for those numbers.

Peptide5 mg
Water2 mL
Dose250 mcg
Syringe30U
Draw10U

Peptide in the vial

5 mg
mg

Bacteriostatic water added

2 mL
mL

More water = more units per dose (easier to measure). Less water = fewer units (fits smaller syringes).

Syringe

30U · 0.3 mL

Check the last printed number on your barrel: 30, 50 or 100. That is the capacity.

Dose you want

250 mcg

Vial price (optional)

–
$shows cost per dose

Supplies for your next vial

Everything around the vial, in one box, from the same people who built this calculator.

Reconstitution Supply Kit

  • 10 U-100 insulin syringes, 31G, 5/16" needle (the 30U size this calculator defaults to)
  • 50 sterile 70% isopropyl alcohol prep pads
  • 1-quart sharps container so used needles never go in the trash
  • Printed reconstitution and storage card

Does not include bacteriostatic water or peptides. Research and laboratory use. Must be 18+ to purchase. Not shipped to states that restrict non-prescription syringe sales.

$24.95 free US shipping · ships in 3 to 5 days
Reserve a kit (email, pay when it ships) Online checkout opens shortly. Reservations are first in line and there is no charge until the kit ships.

Common vial sizes and water amounts

VialWaterWhat that gives you
500 mg5 mL100 mg/mL; 50 mg = 50U
500 mg10 mL50 mg/mL; 50 mg = 100U
1000 mg10 mL100 mg/mL; 100 mg = 100U
100 mg2 mL50 mg/mL; 25 mg = 50U

Worked examples

500 mg vial + 5 mL water, entering 50 mg
Concentration 100 mg/mL → 1 mg per unit → draw 50 units (0.5 mL) on a 50U syringe. That vial holds about 10 such draws.
1000 mg vial + 10 mL water, entering 100 mg
Concentration 100 mg/mL → 1 mg per unit → draw 100 units (1 mL) on a 100U syringe. That vial holds about 10 such draws.
100 mg vial + 2 mL water, entering 25 mg
Concentration 50 mg/mL → 500 mcg per unit → draw 50 units (0.5 mL) on a 50U syringe. That vial holds about 4 such draws.

Notes for this calculator

NAD+ powder takes up real volume and can be slow to dissolve; give it time and gentle swirling rather than adding more water than the vial can hold. The calculator does not know your vial's capacity, so check the label before choosing 10 mL.

At 100 mg/mL a 50 mg entry is 50 units, which needs a 50U or 100U syringe. Set the syringe to 100U above and the draw line moves to the right place.

Vials for this calculator: see what ThePeptideStore carries. Supplies around the vial are in the kit above.

Common questions

How much water for a 500 mg NAD+ vial?

5 mL gives 100 mg/mL, so 50 mg is 50 units. 10 mL gives 50 mg/mL, so 50 mg is a full 100U syringe. Check that your vial can physically hold the volume.

How many units is 100 mg of NAD+?

100 units at 100 mg/mL (1,000 mg in 10 mL). 50 units at 200 mg/mL. The calculator handles mg entries directly; switch the unit toggle to mg.

How many draws are in a 500 mg vial?

500 mg divided by your entry: 50 mg gives 10 draws, 100 mg gives 5.

Does the calculator recommend a dose?

No. You enter the dose your protocol calls for and it converts that into syringe units, mL, and doses per vial. It never suggests what to take.

Why is my draw too big for the syringe?

The concentration is low for that dose. Either use a larger U-100 syringe or mix the next vial with less water. The calculator shows the exact water amount that would fit your syringe.

More calculators and guides

About this tool. Built and maintained by the team at ThePeptideStore. The arithmetic is the standard U-100 reconstitution formula (concentration = mg ÷ mL; mcg per unit = concentration × 10; units = dose ÷ mcg per unit) and every result is recomputed live in your browser; nothing you enter is sent to a server. Reviewed 2026-09-02. This calculator does arithmetic on numbers you type. It is not medical advice and does not recommend any dose.
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