What Are The Side Effects Of Iron Supplements?

Stomach Pain Or Upset

Patients just starting iron supplementation may notice stomach pain or upset. To reduce the risk of these symptoms, doctors may start the patient on a half dose of iron at first, working up to a full dose within a few weeks. Iron is absorbed most effectively if it is taken on an empty stomach. However, doing this can increase the chance of experiencing stomach pain. For this reason, doctors typically recommend patients take iron supplements with food. When taking iron with meals, it is important to avoid drinking milk, taking antacids, or consuming calcium supplements or high-calcium foods at the same meal, as calcium decreases the body's ability to absorb iron. Patients should also avoid taking iron supplements with caffeinated drinks and with high-fiber foods such as oatmeal, whole grains, cereals, and raw vegetables. Individuals who notice sharp or stabbing stomach pain should let a doctor know right away as this type of pain could be a symptom of an iron overdose.

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