This Dr. Stanfield? /s
"Molecules I Used To Take But Have Now Stopped
NMN:
I focus on stopping my NAD from declining by using Apigenin, Quercetin, Fisetin, Niacin, regular exercise, a great diet, periods of safe fasting, and restful sleep.
Since I’m 30, there’s not a reason for me to take NMN in addition to the above strategies at the moment.
As I enter my mid-30s, if my NAD levels are going down I will start taking NR.
At this stage, there is far more published human data on NR compared with NMN. NR also has its Generally Recognized As Safe (GRAS) certification from the FDA. For those reasons, I would start NR, and not NMN."