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 them first.This drug should not be used with the following medication because very serious interactions may occur: methenamine.If you are currently using the medication listed above, tell your doctor or pharmacist before starting sulfasalazine.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: cyclosporine, digoxin, folic acid, certain drugs used to treat diabetes (sulfonylureas such as glipizide, glyburide, tolbutamide), PABA taken by mouth, phenytoin, warfarin.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 should call the US National Poison Hotline at 1-800-222-1222. Canada residents should call a provincial poison control center. Symptoms of overdose may include: severe stomach/abdominal pain, persistent vomiting, extreme drowsiness, seizures.

NOTES: Do not share this medication with others.Laboratory and/or medical tests (e.g., complete blood count, liver and kidney function tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.

MISSED DOSE: If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

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.