DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: chloramphenicol, certain anti-seizure drugs (e.g., carbamazepine, phenytoin, primidone), methotrexate, penicillamine, other vitamins/nutritional supplements.This product can decrease the absorption of other drugs such as bisphosphonates (e.g., alendronate), quinolone antibiotics (e.g., ciprofloxacin, levofloxacin), and tetracycline antibiotics (e.g., doxycycline, minocycline). Therefore, separate your doses of these medications as far as possible from your doses of this product. Ask your doctor or pharmacist about how long you should wait between doses and for help finding a dosing schedule that will work with all your medications.Folic acid may affect certain laboratory tests for vitamin B12 deficiency, resulting in false test results. Untreated vitamin B12 deficiency may result in serious nerve problems (e.g., peripheral neuropathy with numbness/tingling symptoms). Consult your doctor or pharmacist for details.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
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