29.5% of Niacin (Vitamin B3) products declare a dose above the adult Tolerable Upper Intake Level
Of 11,983 on-market Niacin (Vitamin B3) products evaluated, 3,537 (29.5%) 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.