Longevity & Mitochondrial

NMN / NR (NAD+ Precursors)

Also known as NMN · Nicotinamide mononucleotide · NR · Nicotinamide riboside · Beta-NMN

Emerging researchOralIntravenousNR is marketed as a dietary supplement; in 2025 the FDA confirmed that NMN is not excluded from the definition of a dietary supplement (a legal classification, not approval of any product or health claim, and NMN remains subject to New Dietary Ingredient notification requirements)

Nicotinamide mononucleotide (NMN) and nicotinamide riboside (NR) are precursor molecules related to vitamin B3 that cells convert into NAD+. They are studied as an alternative to direct NAD+ administration, with the goal of raising cellular NAD+ levels. Studies indicate these compounds can increase NAD+ concentrations, but clinical evidence that this improves physiological function, healthspan, or longevity in humans remains limited and unclear.

Studied / used for

Studied for raising cellular NAD+ levels
Researched in the context of age-related NAD+ decline
Researched for metabolic health and energy
Studied in the context of healthy aging

Commonly reported side effects

Nausea
Flushing
Fatigue
Headache
Indigestion
Reported as generally tolerated in short-term studies, though long-term human safety data are limited

Emerging research. Active research; human evidence still developing. This reflects the strength of the research base, not effectiveness or a recommendation.

Not medical advice.

This is an educational reference. Peptalk does not recommend, prescribe, endorse, or rate any compound, and provides no dosing information. Do not start, stop, or change any peptide, hormone, supplement, or therapy based on this page. All clinical decisions must be made with your licensed healthcare provider.

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