Dr. Peter Attia: Supplements for Longevity & Their Efficacy

4289.919 - 4315.433 Andrew Huberman

I'm not even approaching that at all. Well, it's clear to me, based on my read of the data, that NR can cross the cell membrane directly. Directly. Very easily. There's no obstacle to NR getting into cells. Okay. And NMN cannot because of the extra phosphate group. So that if you take it sublingually or you ingest it orally, it goes into the gut. The phosphate group is cleaved.