Nicotinamide Mononucleotide (NMN)

What is it?

Nicotinamide Mononucleotide (NMN) is a nucleotide derived from ribose and nicotinamide. It is a precursor to nicotinamide adenine dinucleotide (NAD+), a critical coenzyme in cellular energy metabolism and DNA repair.

How does it work for medicinal purposes?

NMN works by increasing levels of NAD+, which is essential for energy production in cells, DNA repair, and the activation of certain enzymes like sirtuins that are involved in longevity and metabolic regulation. Higher NAD+ levels support mitochondrial function, enhance cellular energy, and improve overall cellular health.

Active Ingredients:

The active ingredient is nicotinamide mononucleotide, which is converted in the body to NAD+.

Forms:

NMN is available in various forms including capsules, tablets, powders, and sublingual supplements.

Imbalance or Deficiency:

A deficiency in NAD+ can lead to symptoms of fatigue, metabolic disorders, and accelerated aging. Supplementing with NMN can help restore NAD+ levels, potentially improving energy metabolism and reducing age-related decline.

First Medicinal Use:

NMN research began gaining significant attention in the early 2000s. Its use as a supplement for boosting NAD+ levels has been more recent, with increasing research supporting its benefits in the past decade.

What does Nicotinamide Mononucleotide (NMN) help with?

NMN is a supplement the body turns into NAD+. NAD+ is a helper molecule that cells use to make energy. That much is well-established basic biology, not a claim about NMN pills.

• Low energy and tiredness as you get older
  Good evidence — several human trials in older adults, using self-rated energy scores. In trials of older adults, NMN raised NAD+ levels in the blood. Several of those trials found better energy and fatigue scores within weeks. Those scores came from how people rated themselves, not from lab tests.
  Evidence grade B · Traditional tier T0
• Stamina and breathing ease during exercise
  Good evidence — one Japanese placebo-controlled trial in recreational runners. One Japanese trial gave NMN or a placebo to recreational runners. The NMN group used oxygen more efficiently while exercising. Our file does not record the dose or the number of runners.
  Evidence grade B · Traditional tier T0
• Blood sugar and body weight control
  Early evidence — small human trials in postmenopausal women and older adults. Human trials in postmenopausal women and older adults have tested NMN. They point to a better response to insulin, and to muscle using glucose more efficiently. The trials were small, and no dose is listed in our file.
  Evidence grade C · Traditional tier T0
• Brain fog and slipping mental sharpness
  Early evidence — early, small human studies of thinking skills and sleep. Early human studies have looked at thinking skills in people taking NMN. The results hint at some support for mental sharpness. The studies are small and early, so the picture is far from clear.
  Evidence grade C · Traditional tier T0
• Poor sleep
  Evidence doesn't support this — sleep reported as a side finding; no trial built to test sleep. Some people in NMN trials said their sleep felt better. NAD+ takes part in the body clock, but that link rests on lab work. No trial on file was designed to test sleep on its own.
  Evidence grade D · Traditional tier T0
• Heart and blood vessel health
  Evidence doesn't support this — some human marker studies; no completed outcome trials. Some human research has looked at artery flexibility and heart markers with NMN. Those findings are early and not consistent. No large trial has yet tracked heart attacks or strokes.
  Evidence grade D · Traditional tier T0
• Slowing aging and living longer
  Not yet tested in people — lab and animal work only; no human lifespan data. NAD+ helps run DNA repair enzymes called sirtuins and PARPs. That link comes from lab and animal research, not from trials in people. No human study has measured how long NMN users live.
  Evidence grade insufficient · Traditional tier T0
• Fading eyesight with age
  Not yet tested in people — animal models only; human eye trials still under way. In animal models, NMN gave strong protection against age-related retina damage. Lab science shows NAD+ matters for the energy supply of retinal cells. Human eye trials are still running, and none on file have finished.
  Evidence grade insufficient · Traditional tier T0

What Nicotinamide Mononucleotide (NMN) has not been shown to do

• No human study has shown that NMN makes people live longer.
• No completed trial has shown that NMN prevents heart attacks or strokes.
• NMN has not been shown to prevent or reverse dementia.
• No dedicated sleep trial has shown that NMN fixes insomnia.
• No finished human trial has shown that NMN protects your eyesight.
• Raising NAD+ in the blood has not been shown to reverse aging itself.

How to read this:

The grades rate the human evidence, not how strong the effect feels. A means steady results across randomised trials in people. B means at least one good randomised human trial. C means small or early human studies. D means the human evidence is weak or mixed. Insufficient means lab work, animal work or theory only. This page lists options and findings. It is not medical advice, and it is not a promise that NMN will help you.

Conditions and Symptoms it Helps Prevent:

1. Age-related energy decline
2. Metabolic syndrome
3. Neurodegenerative diseases
4. Cardiovascular diseases
5. Immune senescence
6. Muscle wasting
7. Cognitive decline
8. Inflammation-related disorders
9. Mitochondrial dysfunction
10. Obesity

While NMN is naturally found in some foods, it's present in very low amounts. Foods that contain NMN include:

1. Edamame (soybeans)
2. Broccoli
3. Cucumber
4. Cabbage
5. Avocado
6. Tomato
7. Mushrooms
8. Shrimp
9. Milk

Possible Side Effects:

NMN is generally well tolerated, but potential side effects may include:

• Mild gastrointestinal discomfort (nausea, diarrhea) - <1%
• Headache - <1%
• Flushing (due to increased NAD+ levels) - <1%

Recommended Daily Dose:

The typical recommended dose for adults ranges from 250 mg to 500 mg per day, though some studies use higher doses up to 1,000 mg.

Time to Work:

Benefits of NMN supplementation may be noticed within a few weeks to a few months, depending on the individual's baseline NAD+ levels and overall health.

Best Time to Take:

NMN can be taken at any time of day. Some prefer taking it in the morning to potentially benefit from increased energy throughout the day.

With or Without Food:

NMN can be taken with or without food, based on personal preference and tolerability. Taking it with food may help mitigate any mild gastrointestinal side effects.