NMN (Nicotinamide Mononucleotide)
energy
NMN is a naturally occurring form of vitamin B3 that serves as a direct precursor to NAD+ — a coenzyme required for hundreds of cellular processes including energy production, DNA repair, and the function of longevity-associated enzymes called sirtuins. NAD+ levels naturally decline with age (in one study of human skin, levels at ages 51 to 70 were less than half those at 30 to 50), and that decline is associated with reduced cellular energy, increased inflammation, and various age-related changes in function.
NMN offers a direct route to supporting those falling NAD+ levels. After you take it, NMN is absorbed into the bloodstream and converted to NAD+. We use SIRTality® β-Nicotinamide Mononucleotide (NMN), which carries an accepted new dietary ingredient notification (NDIN) — lawfully marketed as a dietary supplement in the U.S. At 500mg, our dose reflects the amounts used in human clinical research — a meaningful investment in your cellular energy infrastructure.
The statements on this page have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
NMN (Nicotinamide Mononucleotide) Benefits — What Studies Found
Your cells produce less energy every year after 30. NMN supplies the raw material to help rebuild what time takes.
NMN evidence · measured over time
The trial ran 60 days at 600mg a day — roughly the dosage and timeline of 2 bottles of RBRN Vitality Complex (500mg a day).
Blood NAD
Near our dose
Yi 2023 · Healthy adults 40–65
- Dose
- 600mg/day
- Adults
- 80
- Days
- 60
- p The p-value is the chance a gap this large would show up if the ingredient did nothing. Below .05 is the conventional bar for a result to count as statistically significant.
- <.001
NMN and placebo finished about 34 nM apart at day 60.
View study →Pooled verdict
A 2025 meta-analysis of 7 randomized trials found NMN raised blood NAD by a large margin, though results varied widely between trials. The same review found most other outcomes it measured, including physical performance, did not differ from placebo.
Zhang 2025 →Dot = pooled effect size, placed on the standard scale (0.2 small, 0.5 moderate, 0.8 large). Shaded band = 95% confidence range.
Why a 500mg dose of NMN (Nicotinamide Mononucleotide)
Human studies on NMN use doses ranging from 250mg to 1200mg daily. We chose 500mg — a substantial dose that provides meaningful NAD+ support while staying within the studied range.
- Substantial, Studied Dose 500mg sits within the 250-1200mg range used in human NMN research — above the 300mg shown to raise NAD+, without pushing to the highest doses studied.
- Direct NAD+ Precursor NMN is the most direct dietary precursor to NAD+, the coenzyme required for cellular energy production and DNA repair.
- Sized for a Full Formula Meaningful enough to support NAD+ levels without dominating the formula's capsule budget.
- Human-Trial Validated Range Oral NMN at similar doses has been confirmed to raise blood NAD+ levels in published human studies.
Dosing in the Research Range
Human trials have used 250 to 1,200mg a day. The highest daily amount FDA has acknowledged in an NMN New Dietary Ingredient notification is 600mg; RBRN uses 500mg.
NAD+ powers cellular energy, DNA repair, and the enzymes that maintain you — and it drops every year after 30. NMN rebuilds the supply.
01
Physical Performance in Older Adults
Kim M, et al. (2022). Nutrients.
Source
Physical Performance in Older Adults
Kim M, et al. (2022). Nutrients. Source
A 12-week randomized, double-blind study in 108 older Japanese adults found NMN supplementation improved lower limb function (sit-to-stand test, effect size d=0.72) and reduced drowsiness (d=0.64), with the strongest effects from afternoon dosing.
02
NAD+ Elevation Confirmed
Okabe K, et al. (2022). Frontiers in Nutrition.
Source
NAD+ Elevation Confirmed
Okabe K, et al. (2022). Frontiers in Nutrition. Source
Human studies confirm that oral NMN supplementation successfully increases blood NAD+ levels. This is the foundational mechanism for all of NMN’s potential benefits—and it works.
03
Muscle Function in Healthy Older Men
Igarashi M, et al. (2022). NPJ Aging.
Source
Muscle Function in Healthy Older Men
Igarashi M, et al. (2022). NPJ Aging. Source
Chronic NMN supplementation elevated blood NAD+ levels and altered muscle function in healthy older men. The study demonstrated that oral NMN can affect relevant metabolic parameters. Participants took 250mg a day, half of RBRN’s 500mg. A supplier error swapped supplements for 22 participants at week 6, so 12-week results come from 20 men (10 per group).
04
Cardiovascular Markers
Katayoshi T, et al. (2023). Scientific Reports.
Source
Cardiovascular Markers
Katayoshi T, et al. (2023). Scientific Reports. Source
A 12-week RCT found NMN supplementation (250mg/day) tended to reduce arterial stiffness in healthy middle-aged adults, though the overall result was not statistically significant. Significant reductions were observed in subgroups with above-average BMI or blood glucose.
05
NAD+/NADH at 300mg Over 60 Days
Huang H, et al. (2022). Frontiers in Aging.
Source
NAD+/NADH at 300mg Over 60 Days
Huang H, et al. (2022). Frontiers in Aging. Source
In a 60-day randomized, double-blind trial of 66 adults aged 40–65 (62 analysed; 28 men) taking 300mg a day of NMN (Uthever®), serum NAD+/NADH rose 38% from baseline in the NMN group and 14% in the placebo group; the difference between groups was not statistically significant (p = 0.40). Walking endurance was also not different from placebo. The author was employed by the NMN manufacturer (Effepharm - not the manufacturer of SIRTality® contained in RBRN Vitality Complex).
06
Blood NAD Over 60 Days, Three Doses
Yi L, et al. (2023). GeroScience.
Source
Blood NAD Over 60 Days, Three Doses
Yi L, et al. (2023). GeroScience. Source
In a 60-day randomized, double-blind trial of 80 healthy adults aged 40–65 (20 per group; 33 men), NMN at 300, 600 or 900mg a day raised blood NAD (NAD+ plus NADH, measured in serum) above placebo at day 30 and day 60 (all p < 0.001). At 600mg, the dose closest to RBRN’s 500mg, blood NAD went from 7.95 to 39.0 nM at day 30 and 45.3 nM at day 60; placebo went from 8.11 to 9.83 and 11.8 nM. 600mg and 900mg did not differ. Six-minute walking distance also improved over placebo in all NMN groups. The trial was funded by the NMN manufacturer (Aba Chemicals / Abinopharm - not the manufacturer of SIRTality® contained in RBRN Vitality Complex), and NAD was measured with a colorimetric kit rather than mass spectrometry.
Published Research
51 studiesEvery claim we make is grounded in peer-reviewed research. Tap any study to read the abstract.
Our Assessment: NMN (Nicotinamide Mononucleotide)
NAD+ elevation in humans is confirmed and the mechanism is sound. Early trials are mixed on physical performance: some single trials improved walking distance, but pooled across trials the effect was not significant. Long-term human data is still limited. We included it because the science is compelling, not because it's settled.
- NMN successfully raises NAD+ levels in humans—this is well-established
- NAD+ decline with age is real and documented
- The mechanisms connecting NAD+ to cellular function are understood
- Short-term safety appears excellent
- Long-term human studies (most trials are 6-12 weeks)
- Whether NAD+ elevation translates to clinically meaningful outcomes in diverse populations
- Optimal dosing for different goals and ages
- Whether impressive animal results fully translate to humans
How NMN Fits the Formula
No ingredient works alone. NMN was chosen because it amplifies — and is amplified by — specific formula partners.
PQQ
NMN provides raw material for NAD+ production. PQQ promotes the creation of new mitochondria. Together, they address cellular energy from two angles: more NAD+ (the fuel) and more mitochondria (the engines).
Safety and Precautions
Always consult with a healthcare professional before starting any new dietary supplement, especially if you have an existing medical condition or take prescription medications.
