Upper Limit Watch

29.5% 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	11,983	3,537	29.5%
Magnesium	350 elemental mg	14,120	1,272	9.0%
Zinc	40 elemental mg	13,114	390	3.0%
Iron	45 elemental mg	7,608	212	2.8%
Vitamin A	3000 mcg RAE	2,423	42	1.7%
Vitamin B6 (Pyridoxine)	100 mg	15,069	173	1.1%
Selenium	400 elemental mcg	7,612	85	1.1%

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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 #272759 — 1500 mg NE
Product #277943 — 1500 mg NE
Product #305131 — 1500 mg NE

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 #200442 — 2770 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

Vitamin A: example products over the UL

Product #287499 — 450000 mcg RAE
Product #291443 — 450000 mcg RAE
Product #284995 — 375000 mcg RAE
Product #261915 — 180000 mcg RAE
Product #316208 — 60000 mcg RAE
Product #22578 — 15000 mcg RAE
Product #315444 — 9750 mcg RAE
Product #322136 — 9750 mcg RAE
Product #322137 — 9750 mcg RAE
Product #9995 — 7500 mcg RAE

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 #211783 — 500 mg
Product #272733 — 500 mg
Product #283092 — 500 mg
Product #298454 — 500 mg
Product #303205 — 500 mg
Product #316292 — 500 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 #70429 — 200000 elemental mcg
Product #264381 — 160000 elemental mcg
Product #244630 — 150000 elemental mcg
Product #333017 — 140000 elemental mcg
Product #207234 — 110000 elemental mcg
Product #209296 — 105000 elemental mcg