Both products aim to raise NAD+, but they use different ingredients, sit on very different amounts of research and cost different amounts. Here is how they compare as of October 2026.
If published human research is what matters most to you, Tru Niagen (nicotinamide riboside, or NR) has the deeper evidence base, though much of it is company-funded and benefits beyond raising NAD+ are limited. GenuinePurity Liposomal NMN gives a higher daily dose of a different NAD+ precursor, publishes some lab certificates and has a longer 97-day guarantee, but NMN's human research is thinner and none of it tested this specific product. Neither is proven to slow aging.
Tru Niagen is made by Niagen Bioscience, the company formerly called ChromaDex, which changed its name in March 2025. It contains nicotinamide riboside chloride, sold under the ingredient name Niagen. GenuinePurity Liposomal NMN contains nicotinamide mononucleotide in a phospholipid (sunflower lecithin) capsule. GenuinePurity's terms of service list the seller as Leading Edge Health.
NMN and NR are close cousins. Both are forms of vitamin B3 that the body converts into NAD+, and NR is one step further back in the chain. For a deeper look at how the two ingredients differ, see our comparison of NMN and NR as NAD+ supplements.
| GenuinePurity Liposomal NMN | Tru Niagen 300 mg | |
|---|---|---|
| Active ingredient | NMN, stated 96% purity | Nicotinamide riboside chloride (Niagen) |
| Dose per serving | 500 mg (2 capsules of 250 mg) | 300 mg (1 capsule); a 1,000 mg "Pro" version is also sold |
| Servings per bottle | 30 | 30 (also sold in 90 and 180 counts) |
| Listed price, October 2026 | $69 one-time, $49 on subscription | $49 list, $39.20 shown on the site; subscribe-and-save is 20% off |
| Product-specific human trials | None we could find | Many on the Niagen ingredient, several funded by the company |
| Testing claims | Third-party tested; certificates posted online | Company cites its own patents and studies; we did not verify third-party testing |
| Guarantee | 97 days, including used bottles (with conditions) | Return policy page exists; terms not verified |
Niagen Bioscience says there are more than 45 registered human clinical studies on its NR, and its clinical studies page lists around 47 publications, including papers in Cell Metabolism, Movement Disorders and Lancet Neurology.
The best-known dose study is Conze et al. (2019) in Scientific Reports. 140 overweight but healthy adults aged 40 to 60 took 100, 300 or 1,000 mg of NR or a placebo for eight weeks. Whole-blood NAD+ rose by about 48% at 300 mg and about 139% at 1,000 mg by day 56. Adverse events were similar across groups, with no serious events and no flushing. ChromaDex funded the study and two of the three authors were employees.
The bigger picture is more sobering. A 2023 review in Science Advances by Damgaard and Treebak looked at 25 published human NR studies. NR reliably raised NAD+ in blood, but there was no sign that it raised NAD+ in muscle, and clinically meaningful benefits were few. The most consistent signal was a possible drop in some inflammation markers. The authors also flagged a rise in blood triglycerides in some trials. So NR has more research, but more research has not shown that it makes healthy people feel or age differently.
NMN's human trials are fewer, smaller and shorter. Typical studies had 25 to 110 people taking 250 to 1,250 mg a day for four to twelve weeks. They show NMN raises blood NAD+, with some small trials reporting changes in muscle insulin sensitivity, walking distance or grip strength. Results have been mixed and many trials were funded by NMN ingredient makers. Our GenuinePurity NMN review goes through what this means for that product.
No published trial has tested GenuinePurity's liposomal formula. The "liposomal" claim (that wrapping NMN in phospholipids improves absorption) has not been shown in a human study for this product, as far as we could find. Its 500 mg dose does fall in the range used in several NMN trials, which is a fair point in its favor.
NR has been sold as a dietary supplement in the US for years and has not faced the kind of status challenge NMN did. NMN had a rocky few years. In late 2022 the FDA said NMN was excluded from the supplement definition because it had first been studied as a drug, and NMN products became hard to find at major retailers.
On September 29, 2025, after a citizen petition and lawsuit by the Natural Products Association, the FDA reversed course and said NMN can be sold as a dietary supplement. A law firm analysis noted the FDA called this its "current thinking," and that each company still needs a proper new dietary ingredient notification or must source from a supplier that has one. NMN is legal to sell today, but its regulatory footing is newer than NR's.
As of October 2026, GenuinePurity NMN costs $69 for a single 30-day bottle, $59 per bottle in a six-pack, or $49 a month on subscription. It also runs an introductory offer at $19 for the first bottle, which then renews at $49 every 30 days unless you cancel. Tru Niagen's 300 mg capsules were listed at $49 for 30 with $39.20 shown as the current price, and the 1,000 mg Pro version at $92.80 for a month.
Comparing milligrams is not very useful because NMN and NR are different molecules. A fairer comparison is evidence per dollar. Tru Niagen at 300 mg is the cheaper option and has a published dose-response study at exactly that dose. GenuinePurity costs a bit more on subscription but gives a larger dose and a longer guarantee.
Watch the fine print on both. GenuinePurity's guarantee requires returns to reach its warehouse within 97 days of delivery, excludes shipping and is limited to one order per customer. Its $19 trial turns into a recurring subscription, so set a reminder if you only want one bottle. Heads-up: the $19 first-bottle offer auto-renews at $49 every 30 days until you cancel. On the Tru Niagen side, the lower price shown on its site may depend on promotions or subscribing, so check the checkout total before you buy.
Both NR and NMN have been well tolerated in short trials, but long-term data are missing for both. The same cautions apply to each: skip them if you are pregnant, breastfeeding or under 18, and avoid them if you have cancer or a history of it unless your oncologist agrees. If you take diabetes medicines, blood pressure medicines or several prescriptions, talk to your doctor first. We go into the details in our article on NMN side effects.
Choose Tru Niagen if you want the NAD+ precursor with the most published human research and a dose that has been directly studied, and you are fine with a modest price. Choose GenuinePurity NMN if you specifically want NMN, value a 97-day guarantee and posted lab certificates, and accept that the evidence is thinner and not product-specific.
Either way, keep expectations realistic. Both reliably raise NAD+ in blood. Neither has been shown to slow aging or prevent disease in people, and neither is FDA-approved for any health use.
Affiliate link: we earn a commission if you buy through it, at no extra cost to you. 97-day money-back guarantee: the first two opened bottles plus any unopened ones must reach the warehouse within 97 days of delivery; shipping isn't refunded; one order per customer. Heads-up: the $19 first-bottle offer auto-renews at $49 every 30 days until you cancel. The site says you can skip or cancel at any time.