Iron overdose is one of the most dangerous supplement toxicities. UL is 45 mg/day. Exceeding this damages liver, heart, and pancreas. Check your dose.
Acute iron overdose is dangerous; chronic excess can damage the liver, heart, and pancreas.
| Standard | RDA | Upper Limit (UL) |
|---|---|---|
| United States | 18 mg | 45 mg |
| European Union | 18 mg | 45 mg |
| Australia | 18 mg | 45 mg |
| China | 20 mg | 42 mg |
| Japan | 10.5 mg | 50 mg |
RDA = Recommended Dietary Allowance. UL = Tolerable Upper Intake Level. “Not established” does not mean unlimited intake is safe.
Acute iron overdose can cause severe vomiting, abdominal pain, and even organ failure. Chronic excess damages the liver, heart, and pancreas. The UL is 45 mg/day for adults. Iron supplements should only be taken when a deficiency is confirmed by blood test.
Yes. Acute iron overdose (especially in children) is a medical emergency. Symptoms include severe vomiting, diarrhea, abdominal pain, and lethargy. Call emergency services or go to the ER immediately if you suspect iron overdose.
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