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DRUG INTERACTIONS: Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.This product should not be used with the following medications because very serious interactions may occur: altretamine, cisplatin, levodopa (when used without carbidopa).If you are currently using any of these medications, tell your doctor or pharmacist before starting this medication.Before using this product, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: folic acid antagonist (e.g., methotrexate), hydantoins (e.g., phenytoin, diphenylhydantoin), pyrimethamine, other vitamin/nutritional supplements.This product can affect the results of certain lab tests (e.g., intrinsic factor antibodies, certain urobilinogen tests). Make sure laboratory personnel and your doctors know you use this drug.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.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly.

NOTES: Do not share this medication with others.Laboratory and/or medical tests (e.g., complete blood count, homocysteine levels) may be performed from time to time to monitor your progress or check for side effects. Consult your doctor for more details.Remember that it is best to get your vitamins and minerals from healthy foods. Maintain a well-balanced diet and follow any dietary guidelines as directed by your doctor. B vitamins, including folic acid, are naturally found in leafy greens, other vegetables, and citrus fruits. Folic acid is also found in enriched grains such as bread, pasta and cereal.Some brands of this medication may also contain ingredients such as vitamin E, para-aminobenzoic acid, or alpha-lipoic acid. Consult your doctor or pharmacist if you have questions about the ingredients in your brand.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.