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What SPECIAL PRECAUTIONS should I follow?

Before taking ferrous sulfate,

  • tell your doctor and pharmacist if you are allergic to ferrous sulfate, any other medications tartrazine (a yellow dye in some processed foods and medications) or any of the ingredients in ferrous sulfate tablets, capsules, or liquid. Ask your doctor or pharmacist for a list of the ingredients.
  • tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Be sure to mention any of the following: chloramphenicol, cimetidine (Tagamet), levodopa (Larodopa, Sinemet), methyldopa (Aldomet), penicillamine. Your doctor may need to change the doses of your medications or monitor you more carefully for side effects.
  • if you also are taking cinoxacin (Cinobac), ciprofloxacin (Cipro), demeclocycline, doxycycline, enoxacin (Penetrex), levofloxacin (Levaquin), lomefloxacin (Maxaquin), methacycline, minocycline, nalidixic acid (NegGram), norfloxacin (Noroxin), ofloxacin (Floxin), oxytetracycline, sparfloxacin (Zagam), or tetracycline, take it 3 hours after or 2 hours before taking ferrous sulfate. Do not take antacids at the same time as ferrous sulfate; take them as far apart as possible.
  • tell your doctor if you have or have ever had ulcers, colitis, or intestinal disease.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking ferrous sulfate, call your doctor.
  • talk to your doctor about the risks and benefits of taking this medication and the proper dosage if you are 65 years of age or older. Older adults should only take lower doses of ferrous sulfate because higher doses may not be more effective than lower doses and are more likely to cause constipation.