22.2% of Niacin (Vitamin B3) products declare a dose above the adult Tolerable Upper Intake Level

Of 10,476 on-market Niacin (Vitamin B3) products evaluated, 2,718 (22.2%) declare a per-serving dose above the adult UL of 35 mg NE, per the 2026-01-16 DSLD dump. Exceeding a UL is not automatically unsafe for every individual — ULs are conservative population-level thresholds.