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Nicotinamide mononucleotide ("NMN" and "β-NMN") is a nucleotide derived from ribose and nicotinamide. Like nicotinamide riboside, NMN is a derivative of niacin, and humans have enzymes that can use NMN to generate nicotinamide adenine dinucleotide (NADH). In mice, NMN enters cells via the small intestines within 10 minutes converting to NAD+ through the Slc12a8 NMN transporter.
NAD+, or nicotinamide adenine dinucleotide, is a critical coenzyme found in every cell in your body, and it’s involved in hundreds of metabolic processes. But NAD+ levels decline with age.
originally posted by: dug88
a reply to: Trueman
The first link is literally an ad to buy pills and from what i can tell reading the second link, and from info here(pdf) taking niacin and vitamin B3 should be sufficient at boosting NAD+ levels. According to the wiki article you linked, NMN needs to be converted to NR before your body can absorb it anyway.