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Medically reviewed by Vanessa Niles, R.N., M.D., F.A.C.O.G. —
Definition
NADP+ and NADPH, in plain English
Cells add a phosphate group to NAD+ to make NADP+ (nicotinamide adenine dinucleotide phosphate). Like NAD+, it switches between an oxidized form (NADP+) and a reduced form (NADPH).
The two pools do different jobs. NAD+ mostly helps break food down for energy, while NADPH powers building reactions, such as making fatty acids and cholesterol, and helps recharge antioxidants like glutathione.
- Made from
- NAD+ plus a phosphate
- Reduced form
- NADPH
- Main job
- Building molecules, antioxidant defense
For your treatment
What NADP+ and NADPH means for NAD+ therapy
NAD+ therapy targets the NAD+ pool. Whether extra NAD+ changes NADP+ or NADPH levels in people hasn't been well studied.
- Free online consultation with a licensed U.S. provider
- NAD+ nasal spray or injection, plans from $166 a month if prescribed
- NAD+ has no FDA-approved use; compounded NAD+ isn’t FDA-approved
Questions
NADP+ and NADPH: common questions
What are NADP+ and NADPH?
NADP+ is NAD+ with an extra phosphate group. Its reduced form, NADPH, supplies electrons for building molecules such as fats and cholesterol and for the cell's antioxidant defenses.
What's the difference between NAD+ and NADP+?
One phosphate group, and a different job. NAD+ mainly helps break down food for energy; NADP+ and NADPH mainly help build molecules and protect cells from oxidative stress.
Do NAD+ products raise NADPH?
That isn't well established in people. Most human research measures NAD+ itself rather than NADP+ or NADPH.
Does NADMedics NAD+ contain NADH or NADP?
No. NADMedics nasal spray and injections contain compounded NAD+. Your cells convert NAD+ into NADH and NADP as they need them.
Can a blood test measure my NAD+?
Research labs can measure NAD+ in blood, but it isn't part of routine care and there's no agreed normal range doctors use.
Why do NAD+ levels fall with age?
Research reviews point to more NAD+ being used by enzymes such as CD38 and PARPs and less being recycled. Most of that evidence comes from lab and animal studies.
Keep learning
Related NAD+ terms
Terms that connect to NADP+ and NADPH, each explained on its own page.
- MoleculesNAD+NAD+ is the oxidized form of nicotinamide adenine dinucleotide, a coenzyme found in every living cell. It carries electrons for energy metabolism and is used by enzymes involved in DNA repair.
- MoleculesNADHNADH is the reduced form of NAD+. It carries high-energy electrons from the breakdown of food to the electron transport chain in mitochondria, where they help make ATP.
- Cell energyRedox reactionA redox reaction is a chemical reaction in which electrons move from one molecule to another: one is oxidized (loses electrons) and the other is reduced (gains them). NAD+ and NADH are the cell's main electron carriers.
- Vitamins & precursorsNiacinNiacin is vitamin B3, an essential nutrient the body turns into NAD and NADP. It includes nicotinic acid and nicotinamide and comes from foods such as poultry, fish, nuts and grains.
Official sources
NADP+ and NADPH: sources and official resources
Official government and research sources behind this page, so you can check the facts yourself.
- NIH Office of Dietary SupplementsNiacin: Health Professional Fact Sheet
Explains how the body turns niacin (vitamin B3) into NAD, a coenzyme used by more than 400 enzymes.
- NIH National Library of Medicine (StatPearls)Niacin (StatPearls, archived)
Clinical review: NAD and NADP as the active forms of niacin, and niacin's use as a cholesterol drug.
- NIH PubMed CentralCovarrubias et al. NAD+ metabolism and its roles in cellular processes during ageing (2021)
Review of how NAD+ works in cells and how levels change with age.
- NIH Office of Dietary SupplementsNiacin: Fact Sheet for Consumers
What niacin (vitamin B3) does, how much adults need and which foods provide it.
Medically reviewed by Dr. Vanessa Niles, R.N., M.D., F.A.C.O.G., on October 12, 2026. This glossary is general education, not medical advice. NAD+ has no FDA-approved use, and compounded NAD+ is not FDA-approved or evaluated by the FDA for safety or effectiveness. Talk with a licensed provider before starting any supplement or treatment.
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