ResearchSafe

NR (Nicotinamide Riboside)

Category: Anti-Aging. Status: Dietary compound (clinical studies).

A form of vitamin B3 and a precursor to NAD+. Like NMN, it is used to raise NAD+ levels to support energy metabolism and healthy aging, with a well-studied oral safety profile.

How it works

Converted to NMN and then NAD+ via the salvage pathway (NRK enzymes). Higher NAD+ supports sirtuins, DNA repair, and mitochondrial energy production.

Key facts

  • Molecular weight: 255.25 Da
  • Half-life: Short; rapidly converted to NAD+
  • Bioavailability: Oral absorption well documented
  • Storage: Keep cool, dry, and sealed; refrigeration extends shelf life.

Dosing overview

  • Typical dose: 250-1000 mg per day
  • Frequency: Once daily
  • Duration: Ongoing
  • Route: Oral

Protocol notes

  • Common range is ~250-1000 mg once daily, often in the morning.
  • Frequently combined with other NAD+ support or longevity supplements.
  • Taken with or without food.

Reported benefits

  • Raises NAD+ levels
  • Supports mitochondrial energy
  • Well-studied oral safety
  • Studied for metabolic and cardiovascular health

Possible side effects

  • Generally well tolerated
  • Mild nausea or flushing (uncommon)
  • GI upset at high doses

Research

  • Nicotinamide riboside raises NAD+ in humans (2018): Oral NR dose-dependently increased blood NAD+ and was well tolerated in healthy adults.

Community reviews of NR

Rated 5 out of 5 from 4 community reviews by ResearchSafe members.

  • titrate_tina rated it 5/5 - Solid compound with real results: Been using NR for about 3 months and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
  • halflife_harry rated it 5/5 - Worth adding to the protocol: NR has been a worthwhile addition. I am data-driven and tracked relevant markers before, during, and after. The improvement is measurable and correlates with the intervention timeline. What sets this apart from some compounds I have tried is the consistency. Benefits did not fluctuate wildly or disappear. They built up and maintained. That gives me confidence in the mechanism. Tolerance has been excellent. Nothing in my bloodwork or subjective experience raised any flags. This is the kind of compound that does its job quietly without causing problems. Exactly what you want.
  • vial_vault_vicky rated it 5/5 - Genuinely effective after 3 weeks: Been using NR for about 3 weeks and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
  • dose_math_derek rated it 5/5 - Noticed clear benefits within weeks: Added NR to my protocol about 2 months ago and it has earned its place. The benefits became noticeable around week 2-3 and have been consistent since. What I appreciate about this compound is the predictability. It does what the research suggests it should do, at roughly the timeline you would expect. No surprises, no dramatic swings, just steady improvement. No notable side effects to report at my dose. Sourcing is always the challenge with research compounds, insist on third-party testing. Storage and reconstitution per standard protocols. Plan to continue.

Compare NR

Community discussions about NR

Research and educational reference only. Not medical advice.