Drug Interactions between Iron Sulfate and Perdiem Fiber Caplet

Polycarbophil may interact with other medications if given at the same time. This can cause your other medications to become less effective. In general, all oral medications should be administered at least 2 hours before or 2 hours after dosing of polycarbophil. Take polycarbophil with a full glass (at least 8 ounces) of cool water or another liquid. Taking polycarbophil without enough liquid may cause it to swell in the throat and cause choking.

Food may reduce the absorption and blood levels of ferrous sulfate. In addition, some oral medications can also interfere with ferrous sulfate absorption into the bloodstream, which may make the medication less effective in treating your condition. Likewise, ferrous sulfate may interfere with the absorption of other orally administered medications. You should take ferrous sulfate on an empty stomach at least one hour before or two hours after a meal. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. Talk to your doctor or pharmacist if you have questions about how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.