NMN

500mg β-Nicotinamide Mononucleotide (β-NMN) per capsule — a direct precursor to NAD+. NAD+ is the coenzyme your cells need for cellular energy production, DNA repair, and sirtuin activation — the cellular maintenance and longevity pathways that keep your cellular machinery running. NAD+ levels are understood to decline with age, which is part of why NAD+ precursors have drawn research interest. NMN is one way to support them. A January 2026 trial in Nature Metabolism (Christen et al.) found NMN meaningfully raised circulating NAD+ over 14 days at 1,000mg/day.*

David Sinclair — Harvard genetics professor, probably the most recognized longevity researcher alive — has publicly stated he takes 1g of NMN every morning. Huberman has said the same on his podcast. The clinical trial base is still early compared to something like creatine, but it's building fast: 12+ published human trials, no serious adverse events at doses up to 1,250mg/day, and a growing body of data on physical performance, metabolic function, and sleep quality. We use a single-ingredient formula — just β-NMN, no proprietary blends, no filler beyond what the capsule needs — third-party tested to confirm it's actually β-NMN and not a cheaper substitute.*

Sinclair and Huberman are not affiliated with YourHealthier and do not endorse this product. Their public statements refer to NMN as an ingredient, not any specific brand.

Why This NMN Supplement

• 🧬 500mg β-NMN per capsule — the specific isomer (β-form) that your body converts to NAD+. Take 1 capsule for the maintenance dose or 2 for the 1,000mg protocol used in recent clinical research.
• 🔬 Third-party lab tested — identity, purity, potency. Confirms it's β-NMN, not NR or nicotinamide sold under a different name. Certificate of Analysis available on request →
• 💊 Single active ingredient — no fillers, no proprietary blends, no added resveratrol, no kitchen-sink formulas. Just NMN at the dose you choose.
• 🏭 Made in a GMP-certified USA facility. HPMC vegetable capsules (vegetarian, vegan). No gelatin.

NMN Supplement Facts

** Daily Value not established.
Other Ingredients: HPMC (vegetable capsule), Microcrystalline Cellulose, Silicon Dioxide, Magnesium Stearate.
30 capsules · Made in USA · GMP-certified facility

NMN Dosage: How to Take

1 capsule (500mg) daily in the morning, with or without food. Some research suggests morning dosing aligns better with your body's circadian NAD+ cycle. If you want the 1,000mg protocol, take 2 capsules. At 2 per day the bottle lasts 15 days.*

For afternoon energy dips, Kim et al. (2022) found that afternoon NMN dosing supported better sleep quality. You can experiment with timing based on what you're trying to optimize. Full timing guide →

What NMN Does: NAD+ and Cellular Health

NAD+ and Why It Matters

NAD+ (nicotinamide adenine dinucleotide) is not a supplement marketing buzzword. It's a coenzyme present in every cell in your body, required for hundreds of metabolic reactions — energy production, DNA repair, gene expression, mitochondrial function, and sirtuin activation. When NAD+ runs low, cells lose the ability to make energy efficiently, and the cellular maintenance pathways that protect against everyday wear go quiet. That's what Sinclair's lab at Harvard has spent two decades studying. NAD+ levels are understood to decline steadily with age. NMN is a direct precursor with good oral bioavailability — your body converts it to NAD+ in a single enzymatic step.* Full NAD+ science →

NMN Clinical Trials: What the Human Studies Show

Christen et al. (2026, Nature Metabolism) ran a randomized, placebo-controlled trial in 65 healthy adults comparing NMN, NR, and nicotinamide head-to-head. After 14 days at 1,000mg/day, NMN meaningfully raised whole-blood NAD+ levels. NR performed comparably — which is worth knowing if you're deciding between the two. Plain nicotinamide (vitamin B3) did not sustain NAD+ elevation.* The study also found that gut bacteria convert NMN to nicotinic acid, which may be part of how it raises NAD+ systemically.

Yi et al. (2023) ran a multicenter trial across 80 adults and found that 600mg/day produced a strong combination of NAD+ elevation and physical performance support over 60 days.* Yoshino et al. (2021, Science) — one of the highest-profile NMN papers — reported improved metabolic markers in postmenopausal women at 250mg/day over 10 weeks.* Igarashi et al. (2022, NPJ Aging) reported improvements in walking speed, grip strength, and endurance in adults over 65.* Kim et al. (2022) reported better sleep quality with afternoon dosing.*

What to expect: a realistic timeline

The Honest State of NMN Research

NMN research is promising but early. The trials are small (30–80 participants), relatively short (2–12 weeks), and the field is still figuring out optimal dosing and who benefits most. This isn't creatine with 500+ trials. It's closer to where ashwagandha was 10 years ago — real human data, consistent direction, but not yet definitive. We think the evidence is strong enough to warrant taking it, especially if you're over 40 and concerned about age-related NAD+ decline. But we're not going to pretend the science is settled, because it isn't.* Cited research describes the ingredient NMN (β-Nicotinamide Mononucleotide), not this specific product. Individual results vary.

How NMN Restores NAD+: The Pathway

What Longevity Researchers Say About NMN

Dr. David Sinclair (Harvard Medical School, genetics) and Dr. Andrew Huberman (Stanford, neurobiology) discuss NAD+ decline, NMN supplementation, and sirtuin activation. Neither researcher is affiliated with YourHealthier.

Published Research Behind This NMN Supplement

• Christen S et al. 2026 (Nature Metabolism) — Randomized, placebo-controlled, 65 healthy adults. NMN (1,000mg/day) meaningfully raised circulating NAD+ over 14 days. NR performed comparably. Nicotinamide did not. First head-to-head comparison of all three precursors. (PMID: 41540253)
• Yi et al. 2023 — Multicenter trial, 80 adults, 60 days. 600mg/day showed a strong combination of NAD+ elevation and physical performance support across dose groups. (PMID: 36482258)
• Yoshino J et al. 2021 (Science) — 250mg/day, 10 weeks, postmenopausal women. Improved metabolic markers — published in one of the top scientific journals in the world. (PMID: 33888596)
• Igarashi M et al. 2022 (NPJ Aging) — Adults over 65. Improvements in walking speed, grip strength, and endurance with NMN supplementation. (PMID: 35927255)
• Kim et al. 2022 — Afternoon NMN dosing associated with improved sleep quality measures. (PMID: 35215405)

All citations describe published research on the ingredient NMN. They do not constitute claims about this specific product. Full studies available on PubMed.

NMN vs NR vs Niacin: NAD+ Precursor Comparison

We're not going to pretend NMN is proven superior to NR — the Christen 2026 trial showed they perform comparably at raising NAD+. Both work. We sell NMN because the majority of new clinical trials and the most active research programs center on it. Full NMN vs NR comparison →

YourHealthier NMN vs Other NMN Supplements

Who Should Take NMN

Adults over 40 who are noticing that fatigue doesn't go away with more sleep, that recovery takes longer than it used to, and that something at the cellular level just feels off. Longevity-focused individuals who want a clean, single-ingredient NMN source without the markup of branded longevity stacks. Biohackers who want to track their own NAD+ response over time. Anyone interested in healthy aging and healthspan — not just lifespan — who wants to support the cellular infrastructure that overall well-being depends on.

Who Should NOT Take NMN

• ❌ Under 30 — your NAD+ levels are likely fine; the cost-benefit doesn't make sense yet
• ❌ Pregnant or breastfeeding — insufficient safety data
• ❌ If your doctor has advised you to avoid supplements that affect cellular energy metabolism — discuss with your healthcare provider first
• ❌ Currently taking prescription medications — check with your doctor before adding any new supplement

The published safety data across 12+ human trials is clean — no serious adverse events at doses up to 1,250mg/day. As with any supplement, talk to your healthcare provider if you have an existing medical condition or take prescription medications. Full safety guide →

NMN Side Effects

Uncommon. Some people report mild flushing, nausea, or headache in the first few days — usually at higher doses and usually temporary. GI discomfort is occasionally reported, typically resolved by taking NMN with food. No serious adverse events in any published trial.*

NMN Supplement Stacks: What Pairs Well

• Berberine — While NMN works on the NAD+/sirtuin axis, berberine supports AMPK — a completely different cellular pathway. For longevity-minded people, the combination covers more ground than either alone. Details →
• Creatine Hydration Powder — Two separate energy systems that don't compete. NMN feeds the mitochondrial side through NAD+; creatine feeds the phosphocreatine side for power output. If cellular health and gym performance are both priorities, this pairing makes sense. Details →
• Lion's Mane — NMN is broad cellular support; Lion's Mane is targeted brain support through nerve growth factor. If cognitive longevity matters to you, they're working on the same goal from different angles — one at the cellular infrastructure level, the other at the neuronal level. Details →
• Magnesium Glycinate — Magnesium is a cofactor in hundreds of enzymatic reactions, including some involved in NAD+ metabolism. It also supports the sleep quality that's critical for overnight cellular repair.* Details →

NMN Supplement FAQ

How much NMN should I take?

500mg/day is a solid maintenance dose and where most clinical trials start. The Christen 2026 trial used 1,000mg/day and showed significant NAD+ elevation. Yi et al. found 600mg/day hit the sweet spot for combined NAD+ elevation and physical performance. Start at 500mg and see how you respond.* Full dosage guide →

When should I take NMN — morning or night?

Morning is the standard recommendation because NAD+ follows a circadian rhythm — levels peak during waking hours. Even so, Kim et al. 2022 found that afternoon dosing supported better sleep quality. If sleep is your priority, afternoon may be worth trying.* Full timing guide →

NMN vs NR — which is better?

The Christen 2026 Nature Metabolism trial compared them directly and found comparable NAD+ elevation. NMN is one enzymatic step from NAD+; NR is two steps. NR has more published trials historically and a patented form (Niagen). Honest answer: both raise NAD+. We chose NMN because the newer clinical trials and the most active research programs center on it.* Full comparison →

Is NMN safe?

Across 12+ published human clinical trials at doses up to 1,250mg/day, no serious adverse events have been reported. Mild side effects (flushing, nausea) are uncommon and temporary. As with any supplement, consult your healthcare provider if you have an existing medical condition or take prescription medications.* Full safety guide →

How do I know if my NMN is real?

NMN is expensive to manufacture at high purity. Low-cost products sometimes substitute NR or nicotinamide — both cheaper, and nicotinamide doesn't even sustain NAD+ elevation. Look for: identity testing that confirms β-NMN specifically, third-party lab testing, and a Certificate of Analysis. Ours is available on request via our Lab Results page.

Should I take TMG with NMN?

Some researchers recommend TMG (trimethylglycine) alongside NMN as a precaution. The logic: when your body uses NAD+ and produces nicotinamide as a byproduct, clearing that nicotinamide requires methyl groups. TMG donates methyl groups. Whether this is necessary at 500–1,000mg NMN doses in healthy adults hasn't been conclusively proven, but the reasoning is sound and TMG is inexpensive. We don't include it in our formula because we want you to control your own stack.

Why is NMN so expensive?

Synthesizing high-purity β-NMN requires enzymatic processes that are significantly more costly than producing common vitamins or amino acids. The raw material cost per gram is many times higher than creatine, magnesium, or ashwagandha. If you see NMN at the same price per capsule as a basic B-vitamin, that's a red flag for purity and identity.

How long does NMN take to work?

The Christen 2026 trial measured raised NAD+ at 14 days. Subjective effects — more stable energy, better mental clarity, slightly faster recovery — tend to show up in the 2–4 week range according to user reports. Metabolic markers and physical performance showed changes over 8–12 weeks in trials. This isn't caffeine. It's a gradual shift in your baseline cellular function.*

Does NMN have FDA approval?

NMN is sold as a dietary supplement. The FDA briefly considered classifying it as an investigational drug in 2022, which caused market disruption, but as of 2026, NMN remains available as a supplement in the United States. Like all dietary supplements, it has not been evaluated by the FDA for treating, curing, or preventing any disease.

Where should I buy NMN?

Look for brands that perform identity testing confirming β-NMN specifically and can provide a Certificate of Analysis on request. Be cautious with listings that offer no testing documentation — NMN substitution is a real problem in this market. Our COA is available on request via our Lab Results page.

Learn More About NMN

• NMN benefits: what the research shows
• NMN dosage guide
• NMN vs NR: the real comparison
• NMN side effects and safety
• Best time to take NMN

⚠️ *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement. · Editorial Policy · Lab Results