NMN Clinical Studies

NMN (nicotinamide mononucleotide), a molecule found in small quantities in various foods, is widely researched due to its critical role in the synthesis of NAD+ (nicotinamide adenine dinucleotide).

NAD+ is essential for cellular energy production, and its levels decline with age, leading to dysregulation of proteins vital for mitochondrial function. This decline affects energy levels and cellular processes related to aging, gene expression, metabolism, inflammation, and DNA repair.

With over 400 research papers published, NMN has gained significant attention as a supplement to increase NAD+ levels. By acting as a direct precursor to NAD+, NMN supplementation can help maintain mitochondrial function and support crucial cellular processes, potentially mitigating age-related declines in energy and health.

This blog post provides a detailed table of 17 human clinical trials since 2020 investigating the benefits and effects of NMN supplementation.

Publication Dosage Title and Findings
Jan 2024 250mg

Safety and efficacy of long-term nicotinamide mononucleotide supplementation on metabolism, sleep, and nicotinamide adenine dinucleotide biosynthesis in healthy, middle-aged Japanese men

Finding: NMN overall safely and effectively boosted NAD+ biosynthesis in healthy, middle-aged Japanese men, showing its potential for alleviating postprandial hyperinsulinemia.

Aug 2023 250mg

Nicotinamide mononucleotide (NMN) intake increases plasma NMN and insulin levels in healthy subjects

Finding: Oral administration of NMN elevates plasma levels of NMN and NAD+, and postprandial serum insulin levels.

Jul 2023 2,000mg

Nicotinamide Adenine Dinucleotide Augmentation in Overweight or Obese Middle-Aged and Older Adults: A Physiologic Study

Finding: NMN administration in overweight or obese, middle-aged and older adults safely increased circulating NAD levels, and significantly reduced total LDL and non-HDL cholesterol, body weight, and diastolic blood pressure. 

Feb 2023 250mg

Nicotinamide adenine dinucleotide metabolism and arterial stiffness after long-term nicotinamide mononucleotide supplementation: a randomized, double-blind, placebo-controlled trial

Finding: NMN supplementation may alleviate vascular stiffness and reduce the risk of cardiovascular diseases events.

Jan 2023

1,000mg

2,000mg

MIB-626, an Oral Formulation of a Microcrystalline Unique Polymorph of β-Nicotinamide Mononucleotide, Increases Circulating Nicotinamide Adenine Dinucleotide and its Metabolome in Middle-Aged and Older Adults

Finding: MIB-626 1 000 mg once-daily or twice-daily regimens were safe and associated with substantial dose-related increases in blood NAD levels and its metabolome.

Dec 2022

300mg

600mg

900mg

The efficacy and safety of β-nicotinamide mononucleotide (NMN) supplementation in healthy middle-aged adults: a randomized, multicenter, double-blind, placebo-controlled, parallel-group, dose-dependent clinical trial

Finding: Oral administration of NMN up to 900 mg/day for 60 days was safe and well tolerated. NMN supplementation had a positive impact on the physical endurance and general health conditions of healthy adults.

Nov 2022 250mg

Effects of nicotinamide mononucleotide on older patients with diabetes and impaired physical performance: A prospective, placebo-controlled, double-blind study

Finding: In older male patients with diabetes and impaired physical performance, NMN supplementation for 24 weeks was safe, but did not improve grip strength and walking speed.

Sep 2022 300mg

Nicotinamide Mononucleotide Is Safely Metabolized and Significantly Reduces Blood Triglyceride Levels in Healthy Individuals

Finding: NMN administration significantly increased blood NAD+ levels without damaging blood cells and significantly reduced blood triglyceride (TG) levels. These findings imply that intravenous administration of NMN may lead to the prevention and treatment of diseases associated with increased TG levels, such as fatty liver and diabetes.

Aug 2022 1,250mg

Safety evaluation of β-nicotinamide mononucleotide oral administration in healthy adult men and women

Finding: Our results indicate that β-NMN is safe and well-tolerated in healthy adult men and women an oral dose of 1250 mg once daily for up to 4 weeks.

Jun 2022 300mg

Clinical evaluation of changes in biomarkers by oral intake of NMN

Finding: NMN 300 mg/day orally for eight weeks showed no safety issues and favorable changes in many biomarkers,
suggesting that NMN, a member of the NAD world, may be a promising nutritional material for aging and metabolic control
in humans.

May 2022 250mg

Chronic nicotinamide mononucleotide supplementation elevates blood nicotinamide adenine dinucleotide levels and alters muscle function in healthy older men

Finding: Chronic oral NMN supplementation can be an efficient NAD + booster for preventing aging-related muscle dysfunctions in humans.

May 2022 300mg

A Multicentre, Randomised, Double Blind, Parallel Design, Placebo Controlled Study to Evaluate the Efficacy and Safety of Uthever (NMN Supplement), an Orally Administered Supplementation in Middle Aged and Older Adults

Finding: The rise in the levels of NAD+/NADH at day 30 and day 60 illustrated the potential of Uthever to raise the levels of NAD+ in the cells, which is linked to higher energy levels and an anti-aging effect. Increased sensitivity to insulin has also been linked to anti-aging.

Apr 2022 250mg

Oral Administration of Nicotinamide Mononucleotide Is Safe and Efficiently Increases Blood Nicotinamide Adenine Dinucleotide Levels in Healthy Subjects

Finding: Oral administration of NMN can be a practical strategy to boost NAD+ levels in humans.

Feb 2022 250mg

Effect of 12-Week Intake of Nicotinamide Mononucleotide on Sleep Quality, Fatigue, and Physical Performance in Older Japanese Adults: A Randomized, Double-Blind Placebo-Controlled Study

Finding: NMN intake in the afternoon is more effective in improving lower limb function and reducing drowsiness in older adults, which could further benefit their physical and mental health.

Jul 2021

300mg

600mg

1,200mg

Nicotinamide mononucleotide supplementation enhances aerobic capacity in amateur runners: a randomized, double-blind study

Finding: NMN increases the aerobic capacity of humans during exercise training, and the improvement is likely the result of enhanced O2 utilization of the skeletal muscle.

Apr 2021 250mg

Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women

Finding: The results from our study demonstrate that NMN supplementation (250 mg/day) increases skeletal muscle insulin signaling, insulin sensitivity, and muscle remodeling in postmenopausal women with prediabetes who are overweight or obese.

Feb 2020

100mg

250mg

500mg

Effect of oral administration of nicotinamide mononucleotide on clinical parameters and nicotinamide metabolite levels in healthy Japanese men

Finding: Oral administration of NMN was found to be feasible, implicating a potential therapeutic strategy to mitigate aging-related disorders in humans.

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