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NAD+ / NMN / NR

Also called: NAD+, nicotinamide adenine dinucleotide

NAD+ is a molecule every cell uses to make energy; levels fall with age. NMN and NR (nicotinamide riboside) are taken to raise it.

Why people take it
Longevity, energy and anti-ageing.
What the evidence says
They do raise NAD+ levels in the blood, but human studies have not shown clear benefits for ageing, energy or health. Long-term safety is not known.
Be careful
Expensive, and quality varies between products. Talk to your doctor first if you have cancer or take other medicines.

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Common questions

What is NAD+ / NMN / NR?

NAD+ is a molecule every cell uses to make energy; levels fall with age. NMN and NR (nicotinamide riboside) are taken to raise it.

Why do people take NAD+ / NMN / NR?

Longevity, energy and anti-ageing.

Does NAD+ / NMN / NR work?

They do raise NAD+ levels in the blood, but human studies have not shown clear benefits for ageing, energy or health. Long-term safety is not known.

Is NAD+ / NMN / NR safe?

Expensive, and quality varies between products. Talk to your doctor first if you have cancer or take other medicines.

Sources and further reading

NCCIH: using dietary supplements wisely · NIH Office of Dietary Supplements: health information

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.