NMN or NR – Which is better? – RENUE BY SCIENCE – Bioavailable NAD+ Boosters

NMN or NR – Which is better?

There has been few, if any, head to head research published comparing Nicotinamide Mononucleotide (NMN) and Nicotinamide Riboside (NR).

However, Dr. Sinclair recently said he takes NMN instead of NR based on research he did that found NR did not work at all, while NMN increased the endurance in older mice such that they were able to run twice as far as those on placebo.


“NMN makes mice run further. Old mice can run 50% further, because they have better blood flow, better energy. NR at the same dose did not do that. In fact it had NO EFFECT.” (Dr. David Sinclair)


He is referencing this research, but unfortunately, they did not publish the results they found with NR. See our review here.

NMN has much stronger record of benefit to humans in clinical studies

  • NMN has much stronger record of benefit to humans in clinical studies
  • NMN treatment increased muscle insulin sensitivity
  • NR did not improve insulin sensitivity in trials

See our full article comparing the clinical research between NMN and NR here.

Bioavailability Issues with NR and NMN

Nicotinamide Mononucleotide (NMN) and Nicotinamide Riboside (NR) both have very poor bioavailability and if not improved, a tiny fraction is able to make it to the bloodstream and reach tissues throughout the body.

Delivery methods that improve the bioavailability are far more important than which molecule is used.

Now, both NMN and NR are available in Liposomes, which protect them from digestion even more than sublingual delivery.  Liposomes release the payload in the bloodstream slowly over 24 hours, greatly minimizing the surge in NAM that is known to cause problems with standard NMN and NR capsules.


  1. We now offer NR in a powdered liposomal formula that costs much less than standard NR products on the market
  2. Our new LIPO NR is the first NR with improved bioavailability
  3. Nicotinamide mononucleotide increases muscle insulin sensitivity in prediabetic women
  4. A randomized placebo-controlled clinical trial of nicotinamide riboside in obese men: safety, insulin-sensitivity, and lipid-mobilizing effects
  5. Nicotinamide riboside augments the human skeletal muscle NAD+ metabolome and induces transcriptomic and anti inflammatory signatures in aged subjects
  6. Nicotinamide riboside supplementation alters body composition and skeletal muscle acetylcarnitine concentrations in healthy obese humans


Besides the key factors in table above, some others that are sometimes discussed, but not determining factors are:


NR now has GRAS status which enables it to be used in food, but GRAS is meaningless for supplement sales. Chromadex sold Niagen for 15 months before they received GRAS for NR.


NMN must be converted to NR to enter some cells. This does not appear to be a significant disadvantage, as studies have shown NMN restores intracellular NAD+ even better than NR when placed outside of cells. More importantly, NR is not stable in blood, so is never found at more than trace levels in the bloodstream. NR supplements do not increase NR in the bloodstream, so any perceived advantage at entering cells is moot and vastly outweight by the fact NR is not available in the bloodstream.


Corporate backing of NR by Chromadex has been a factor in encouraging more clinical studies but NR has failed to achieve notable success in any of their 11 studies, and did not improve insulin sensitivity in 3 tries while NMN was successful in their only clinical study published to date.

More about NMN and NR


NMN still has an advantage of lower cost and more bioavailable delivery methods.

However, our biggest concerns with NR have been alleviated with the Liposomal Powder technology that protects NR from digestion in the stomach AND from rapid degradation in the bloodstream.

We now recommend LIPO NMN and LIPO NR equally, second only to our LIPO NAD+ Complete which includes NMN,NR, and NAD+ itself in the only 3-in-1 NAD+ Booster in a bioavailable delivery method.