✓Reliably and dose-dependently raises blood NAD+ (about 51% at 300mg within two weeks), confirmed in a randomized, placebo-controlled human trial.
✓One of the deepest safety dossiers of any longevity supplement: multiple clinical studies, FDA GRAS no-objection status, and two New Dietary Ingredient notifications.
✓Well tolerated with no flushing and placebo-level adverse-event rates at the recommended dose.