Upper Limit Watch

22.2% of on-market Niacin (Vitamin B3) products declare a per-serving dose above the tolerable upper intake level (UL) — the highest share of the 7 compounds we watch for this.

Watched for vitamin B6, zinc, vitamin A (preformed retinol only, not beta-carotene), iron, selenium, niacin, and supplemental magnesium — per methodology.

Compound	UL (adult)	n evaluated	n over UL	% over UL
Niacin (Vitamin B3)	35 mg NE	10,476	2,718	22.2%
Vitamin A	3000 mcg RAE	4,615	995	21.6%
Magnesium	350 elemental mg	11,240	677	4.6%
Zinc	40 elemental mg	12,314	346	2.6%
Iron	45 elemental mg	7,548	194	2.2%
Selenium	400 elemental mcg	7,245	82	1.1%
Vitamin B6 (Pyridoxine)	100 mg	14,257	161	1.0%

Niacin (Vitamin B3): example products over the UL

Product #332867 — 50000 mg NE
Product #315223 — 20500 mg NE
Product #69455 — 13300 mg NE
Product #70239 — 5000 mg NE
Product #315608 — 2000 mg NE
Product #271686 — 1902 mg NE
Product #241841 — 1542 mg NE
Product #56898 — 1500 mg NE
Product #272759 — 1500 mg NE
Product #305131 — 1500 mg NE

Vitamin A: example products over the UL

Product #278556 — 129000000 mcg RAE
Product #313299 — 4600000 mcg RAE
Product #286780 — 1500000 mcg RAE
Product #229411 — 775000 mcg RAE
Product #257899 — 600000 mcg RAE
Product #287499 — 450000 mcg RAE
Product #291443 — 450000 mcg RAE
Product #284995 — 375000 mcg RAE
Product #303627 — 301500 mcg RAE
Product #261915 — 180000 mcg RAE

Magnesium: example products over the UL

Product #231024 — 408000 elemental mg
Product #231027 — 315000 elemental mg
Product #277635 — 37000 elemental mg
Product #321075 — 37000 elemental mg
Product #317277 — 10000 elemental mg
Product #271686 — 8033.7 elemental mg
Product #63211 — 7000 elemental mg
Product #276062 — 3618 elemental mg
Product #273588 — 3189 elemental mg
Product #275321 — 3189 elemental mg

Zinc: example products over the UL

Product #292125 — 15000 elemental mg
Product #181724 — 7500 elemental mg
Product #335393 — 6500 elemental mg
Product #295583 — 2000 elemental mg
Product #271686 — 1057 elemental mg
Product #268844 — 500 elemental mg
Product #37416 — 400 elemental mg
Product #235682 — 238 elemental mg
Product #243520 — 200.0195 elemental mg
Product #303104 — 192 elemental mg

Iron: example products over the UL

Product #221091 — 8000 elemental mg
Product #308169 — 5300 elemental mg
Product #257627 — 4800 elemental mg
Product #271686 — 2110 elemental mg
Product #59462 — 1800 elemental mg
Product #300120 — 1503.1 elemental mg
Product #229901 — 1000 elemental mg
Product #316801 — 1000 elemental mg
Product #255756 — 800 elemental mg
Product #285749 — 800 elemental mg

Selenium: example products over the UL

Product #271977 — 200000000 elemental mcg
Product #224690 — 300000 elemental mcg
Product #8488 — 250000 elemental mcg
Product #331580 — 200000 elemental mcg
Product #264381 — 160000 elemental mcg
Product #244630 — 150000 elemental mcg
Product #333017 — 140000 elemental mcg
Product #207234 — 110000 elemental mcg
Product #7511 — 105000 elemental mcg
Product #209296 — 105000 elemental mcg

Vitamin B6 (Pyridoxine): example products over the UL

Product #25778 — 10000 mg
Product #251347 — 1700 mg
Product #214708 — 533 mg
Product #273854 — 533 mg
Product #61996 — 500 mg
Product #211783 — 500 mg
Product #272733 — 500 mg
Product #283092 — 500 mg
Product #298454 — 500 mg
Product #303205 — 500 mg