What is NAD+?
NAD+ stands for nicotinamide adenine dinucleotide, in its oxidized form. It is a coenzyme present in every living cell, where it carries electrons in many metabolic reactions. Structurally it is a dinucleotide: two nucleotides joined through their phosphate groups, one containing nicotinamide and the other adenine. That makes it chemically different from the peptides in the rest of this peptide library, even though it is sold in the same kind of freeze-dried vial.
The reduced form is called NADH. Supplier labels usually say NAD+, NAD or nicotinamide adenine dinucleotide. This page makes no claims about effects in people. It covers one topic: the arithmetic of NAD+ reconstitution with bacteriostatic water and reading the result on a U-100 syringe.
How much BAC water for an NAD+ vial?
NAD+ is sold in far larger amounts than most peptides. Common vials are 100 mg, nad+ 500mg and nad+ 1000mg. The mg in the vial is fixed; the volume of BAC water you add decides the concentration. The chart shows micrograms per unit on a U-100 syringe and the mg per mL for each combination.
| BAC water | 100 mg vial | 500 mg vial | 1,000 mg vial |
|---|---|---|---|
| 2 mL | 500 mcg/unit 50 mg/mL | 2,500 mcg/unit 250 mg/mL | 5,000 mcg/unit 500 mg/mL |
| 5 mL | 200 mcg/unit 20 mg/mL | 1,000 mcg/unit 100 mg/mL | 2,000 mcg/unit 200 mg/mL |
| 10 mL | 100 mcg/unit 10 mg/mL | 500 mcg/unit 50 mg/mL | 1,000 mcg/unit 100 mg/mL |
Each cell shows mcg per unit on a U-100 syringe (100 units = 1 mL) and the resulting concentration.
Because the vials are so large, the micrograms per unit run into the hundreds or thousands, much bigger than on a typical peptide chart. That is expected and the math is the same. Many people find it easier to read NAD+ in milligrams, so the mg per mL line under each cell is often the more useful figure. Read down a column to see how extra water lowers the concentration. Bigger volumes also mean you may need a larger vial of BAC water; see bacteriostatic water vial sizes.
Worked example: NAD+ reconstitution in syringe units
The calculator runs three steps. Vial mg ÷ water mL gives the concentration. The amount you enter ÷ that concentration gives the volume in mL. Volume in mL × 100 gives U-100 units. With NAD+ it is simplest to enter the amount in mg. For example, if the amount you already have is 50 mg, and the vial is 500 mg with 5 mL of water added:
The math: 500 mg ÷ 5 mL = 100 mg/mL (100,000 mcg/mL), which is 1,000 mcg per unit. 50 mg ÷ 100,000 mcg/mL = 0.5 mL = 50 units on a U-100 syringe.
That amount is an arbitrary figure chosen because it comes out clean. It is not a suggestion. Since 1 mg = 1,000 mcg, a result that looks a thousand times off almost always means the amount was typed in mcg while the calculator was set to mg, or the reverse. The mg to mcg conversion guide walks through it.
NAD+ injection dosage: what this calculator does
Searches for nad+ injection dosage usually come from someone trying to line up an amount with the marks on a syringe. That is all this page does. You supply the amount; the calculator converts it into mL and U-100 units using your vial size and the water you actually added. It does not set, suggest or check an NAD+ injection dosage, a schedule, a frequency or a route, and nothing here should be read that way. Those decisions belong to product labeling and a qualified professional.
Units are the same size on every U-100 syringe: 100 units = 1 mL and 1 unit = 0.01 mL. With a concentrated NAD+ vial, a large entered amount can exceed the capacity of a small syringe; the math is still right, it just needs more than that syringe holds. To confirm any result, check the calculator math by hand.
NAD+ bac water and reconstitution notes
Instructions for mixing NAD+ vary between suppliers, so follow the label on your vial. Some suppliers specify bacteriostatic water for nad+ reconstitution; others list sterile water. Because the powder mass is large, some product sheets specify a larger water volume for the 1000 mg size, and some note that the powder can take longer to dissolve fully than a small peptide vial and should be swirled gently rather than shaken.
Whatever volume you use, measure it precisely and enter that exact figure. With vials this large, a small difference in water changes the concentration noticeably. For the difference between the two common diluents, see bacteriostatic water vs sterile water.
Regulatory status of injectable NAD+
NAD+ is not a peptide and is not an FDA-approved injectable drug. Injectable vials are sold labeled for research use, and oral NAD+ precursors are sold separately as dietary supplements, which this calculator does not cover. There is no approved injection with labeled strengths to compare a research vial against.
A correct calculation cannot confirm a vial’s identity, purity, sterility or stability. The calculator assumes the mg on the label is accurate. Treat every result as arithmetic, not as a statement that a product is safe or suitable for any use.
NAD+ FAQ
How much BAC water do you add to NAD+ 500mg?
There is no single required volume. The chart shows how 2, 5 and 10 mL change the concentration and the micrograms per unit. Follow the product labeling for the diluent and volume, then enter the volume you used.
Why are the mcg per unit numbers so large for NAD+?
NAD+ vials hold hundreds of milligrams, far more than most peptide vials, so each unit on the syringe contains much more material. Reading the result in mg per mL is often easier.
Does this page give an NAD+ injection dosage?
No. It converts an amount you already have into mL and U-100 syringe units for your vial and water volume. It does not recommend a dose, schedule, frequency or route.
Is NAD+ a peptide?
No. NAD+ is a coenzyme made of two linked nucleotides. It is listed here because it is sold as a freeze-dried vial and reconstituted the same way, so the same math applies.
Can I use the calculator for NAD+ 1000mg?
Yes. Enter 1000 mg as the vial size and the water volume you added, and the calculator works out the concentration and units the same way as for smaller vials.