What is NAD+ (nicotinamide adenine dinucleotide)?

The short answer

NAD+ is a molecule found in all cells of the body.

  • What it is

    Coenzyme that cells use in their mitochondria.

  • What people look into

    Aging

Get updates on NAD+ (nicotinamide adenine dinucleotide)

What it is

Type
Coenzyme (not a peptide)
Also known as
nad
How it works
Coenzyme that cells use in their mitochondria.

Regulatory status

Supplement How we label status

As of October 4, 2026, NAD+ (nicotinamide adenine dinucleotide) is sold in the US as a dietary supplement.

See NAD+ (nicotinamide adenine dinucleotide) in the Index →

Federal (FDA)
Dietary supplement (DSHEA) when oral; injectable is the nad-injectable row

US enforcement actions

2 US enforcement actions since 2026.

Actions by US federal and state agencies whose documents name NAD+ (nicotinamide adenine dinucleotide). Each row links to the government's own document.

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US enforcement actions table
DateAgencyActionDocument
FDAWarning letterFDA document, warning letter, April 7, 2026, on fda.gov
FDAWarning letterFDA document, warning letter, January 20, 2026, on fda.gov

Forms and brands

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Forms and brands table
NameKindStatusFDA statusAs of
NAD+ injections (Rx)FormNot FDA-approvedNot FDA-approved

References

Sources as of October 4, 2026

  1. Federal Register: www.federalregister.gov/documents/2019/09/05/2019-18951/amendments-to-the-list-of-bulk-drug-substances-that-can-be-used-to-compound-drug-products-in