NMN (nicotinamide mononucleotide)
Uses itAbout 1 g as a capsule in the morning, taken with a cup of coffee (as stated in 2019)
Sinclair described taking NMN each morning alongside caffeinated coffee and said the combination gives him a noticeable energy boost.
“as a capsule in the morning, down it with a cup of coffee”David Sinclair
Source: Dr. David Sinclair's personal dosage and supplementation habits (podcast, 7 Nov 2019)