Supplements

Iron in supplements · page 135

6,443 supplements on the U.S. market list Iron with an amount per serving. The official Tolerable Upper Intake Level for adults is 45 mg a day.

Tolerable Upper Intake Level (UL)

The highest daily amount that is unlikely to cause harm for almost all healthy people, from food, drinks and supplements combined.

Age	Men	Women	Pregnancy	Breastfeeding
0-6 months	40 mg	40 mg	—	—
7-12 months	40 mg	40 mg	—	—
1–3 years	40 mg	40 mg	—	—
4–8 years	40 mg	40 mg	—	—
9–13 years	40 mg	40 mg	—	—
14–18 years	45 mg	45 mg	45 mg	45 mg
19–50 years	45 mg	45 mg	45 mg	45 mg
51+ years	45 mg	45 mg	—	—

Source: NIH ODS Iron Fact Sheet for Health Professionals, Table 3 (updated 2025-09-04).

Supplements with Iron

6,443 shown · page 135 of 135

Iron 18 mgNature's Measure · Tablet or Pill18 mg per serving

Ferrous Sulfate Extended Release, 140 mgRugby · Tablet or Pill45 mg per serving

Perfect IronSundown Naturals · Tablet or Pill50 mg per serving

Ferrous SulfateEqualine · Tablet or Pill65 mg per serving

Iron TabletsSunmark · Tablet or Pill27 mg per serving

Ferronyl TabletsDouglas Laboratories · Tablet or Pill9.0 mg per serving

Target-Mins Iron 25 mgCountry Life · Tablet or Pill25 mg per serving

Ferrous Sulfate Extended Release 140 mgRugby · Tablet or Pill45 mg per serving

Ferrous Sulfate 28 mg IronVitamin World · Tablet or Pill28 mg per serving

KELA +2 IronLife Zone · Capsule18 mg per serving

Iron 28 mg Ferrous SulfateNature's Bounty · Tablet or Pill28 mg per serving

Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).