Both NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) raise NAD+ levels, which decline 50% between age 40 and 60. But they take different routes to get there — and the science suggests one may have a meaningful edge.
Quick Verdict
NMN edges ahead based on recent 2023-2024 human trials: better muscle NAD+ elevation, more direct pathway, and growing evidence for metabolic benefits. NR has more total studies but older data. Both work — NMN is our pick.
The NAD+ Pathway: How They Differ
NMN
Enters cells directly via Slc12a8 transporter → converts to NAD+ in one step. New 2023 research shows it raises muscle NAD+ more effectively than NR.
NR
Converts to NMN first, then to NAD+. Two-step process. More total human studies (ChromaDex funded much of the research). Generally cheaper.
Head-to-Head Comparison
The Bottom Line
If budget isn’t a concern, go with NMN — sublingual delivery at 250-500mg each morning. If cost matters, NR is a solid alternative. Both genuinely raise NAD+ and activate sirtuins. Stack with apigenin (50mg) which inhibits CD38, an enzyme that degrades NAD+.
Top Rated Supplements
NMN8.5/10Apigenin8.6/10Berberine HCl9.2/10
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NordVital Research Team
Evidence-Based Health Research
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