DRUG INTERACTIONS: See also How to Use section.Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: "blood thinners" (such as acenocoumarol, warfarin).Check all prescription and nonprescription medicine labels carefully since vitamins/dietary supplements may also contain niacin or nicotinamide. These may increase your risk of side effects if taken together. Ask your doctor or pharmacist for more details.This medication may interfere with certain laboratory tests (including urine or blood catecholamines, copper-based urine glucose tests), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
OVERDOSE: If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
NOTES: Do not share this medication with others.Laboratory tests (such as blood lipids, blood sugar, liver function tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
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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.
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