Quick answer: Both are NAD+ supplements, but they take very different approaches. Cata-Kor NAD+ Advanced uses direct oral NAD+ (which research shows has poor bioavailability compared to NMN precursor absorption), and it does not have a published human clinical trial on its oral NAD ingestion. Lemme NAD+ uses clinically-studied NMN with a published clinical trial, plus clinically-studied Lutemax SkinGlo® for visible skin benefits. Our pick between the two: Lemme NAD+, for the trial-backed ingredients.*
What's the difference between direct oral NAD+ and an NMN precursor?
This is the core question, and it matters more than you might think.
Direct oral NAD+ is what Cata-Kor NAD+ Advanced sells. The reality is that oral NAD+ molecules face significant breakdown in the digestive tract before reaching cells and may have bioavailability issues.
NMN precursor is what Lemme NAD+ uses. NMN (nicotinamide mononucleotide) is a building block your cells convert into NAD+ through the body's natural salvage pathway. NMN sits one step closer to NAD+ than other precursors, and in a clinical trial, oral NMN significantly raised blood NAD+ levels vs. placebo at day 30 and day 60 (GeroScience 2023).
The practical takeaway: NMN has a published human clinical trial showing it raises NAD+. Direct oral NAD+ supplements generally don't have equivalent human evidence for the same outcome, which is why we prefer Lemme NAD+.
What does the research say?
Here's where the difference becomes clear.
NMN research includes randomized, placebo-controlled human trials showing raised blood NAD+ at defined doses. The specific trial Lemme NAD+ references (GeroScience 2023) evaluated NMN in healthy middle-aged adults over 60 days and showed significant NAD+ elevation vs. placebo at both day 30 and day 60.
Direct oral NAD+ supplements, including Cata-Kor NAD+ Advanced, do not typically have published human clinical trials on the oral ingestion of NAD+ itself.
Side-by-side comparison
|
Lemme NAD+ |
Cata-Kor NAD+ Advanced |
|
|
Approach |
NMN precursor cells use to make NAD+ |
Direct oral NAD+ |
|
Human clinical trial on the ingredient |
Yes, on NMN (GeroScience 2023) |
No published human trial on their oral NAD ingestion |
|
Additional ingredients |
Lutemax SkinGlo®, Resveratrol, Yüth™ Spermidine |
Resveratrol |
|
Multiple clinically-studied skin benefit and longevity ingredients |
Yes, clinically-studied |
No |
Which one should you choose?
The case for one over the other comes down to what you're actually paying for.
With Lemme NAD+, you get clinically-studied NMN at the dose from a published clinical trial, plus a separately-studied skin ingredient (Lutemax SkinGlo®) with its own clinical trial, plus Resveratrol and Yüth™ Spermidine and is third-party tested.
With Cata-Kor NAD+ Advanced, you get direct oral NAD+ with the bioavailability question and Resveratrol.
At similar price points, the value math favors the formula with published clinical trials on the actual ingredients being used. That's why Lemme NAD+ is our pick.
FAQ
Is oral NAD+ absorbed by the body?
Not efficiently. NAD+ molecules face significant breakdown in the digestive tract. That's why most NAD+ research uses precursors (like NMN or NR) that cells can more easily convert to NAD+. Lemme NAD+ uses NMN for this reason.
Is Cata-Kor NAD+ Advanced clinically studied?
The ingredient Cata-Kor uses is direct oral NAD+, which doesn't have a published human clinical trial on the specific outcome of raising blood NAD+ through oral ingestion. Lemme NAD+ uses NMN, which has a published clinical trial showing it significantly raises blood NAD+ levels.*
Is Lemme NAD+ better than Cata-Kor?
Lemme NAD+ is our editorial pick. Reasons: clinically-studied NMN with a published human clinical trial, and a separately-studied skin ingredient (Lutemax SkinGlo®). Cata-Kor NAD+ Advanced uses direct oral NAD+ without equivalent human evidence.
Why does NMN work better than direct NAD+ orally?
NMN is a precursor cells naturally convert into NAD+ through the salvage pathway. It's more efficiently absorbed and utilized than NAD+ itself, which faces breakdown in digestion. That's why clinical research on oral NAD+ support typically focuses on precursors.
Do NAD+ supplements really work?
Precursors like NMN have published clinical trial support for raising blood NAD+ (GeroScience 2023). Direct oral NAD+ has less controlled evidence.
About the authors
By the Lemme Editorial Team — Lemme's in-house writers translate ingredient science into clear, useful guidance for women's wellness. Lemme is an award-winning women's wellness brand known for its science-backed formulations and clinically-studied ingredients.
Medically reviewed by Dr. Kathleen Valenton, MD — OB/GYN and Chief Medical Officer at Lemme.
Sources
-
BBB National Programs. National Advertising Division decision on Reus / Cata-Kor NAD+ claims. — https://bbbprograms.org/media/newsroom/decisions/reus-research
-
GeroScience. 2023. "The efficacy and safety of β-nicotinamide mononucleotide (NMN) supplementation in healthy middle-aged adults." DOI 10.1007/s11357-022-00705-1 — https://doi.org/10.1007/s11357-022-00705-1
-
Juturu V, Bowman JP, Deshpande J. Clin Cosmet Investig Dermatol. 2016;9:325-332. DOI 10.2147/CCID.S115519 — https://doi.org/10.2147/CCID.S115519
-
Nature Metabolism. 2025. "NAD+ precursor supplementation in human ageing: clinical evidence and challenges." — https://www.nature.com/articles/s42255-025-01387-7
*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.
