Possible Interactions with Iron
Overview
The cholesterol-lowering medications cholestyramine and colestipol as well as the antibiotic tetracycline inhibit the absorption of iron. The absorption of iron is also decreased when taking medications such as omeprazole, lansoprazole, ranitidine, cimetidine, or antacids that are often prescribed for the treatment of ulcers or other stomach problems.
Iron inhibits the absorption of oral quinolones (a class of antibiotics that includes ciprofloxacin, norfloxacin, ofloxacin, monifloxacin, and levofloxacin). Iron also decreases the absorption of ACE inhibitors (such as captopril, enalapril, and lisinopril), a class of medications used for the treatment of high blood pressure.
Levodopa, a medication used for the treatment of Parkinson's disease, may decrease iron levels.
Iron may decrease the effectiveness of levothyroxine, a thyroid replacement hormone used to treat an underactive thyroid.
Iron supplements should not be taken at the same time as any of the medications above. It is best to take iron supplements at least two hours before or after taking any of these medications.
Drug Interactions