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DRUG INTERACTIONS: Tell your doctor of any over-the-counter or prescription medication you may take including: blood pressure medicine, thyroid drugs, antidepressants, sedatives/tranquilizers, sleeping pills, MAO inhibitors (e.g., furazolidone, linezolid, phenelzine, selegiline, tranylcypromine), narcotic pain medication (e.g., codeine). This drug may interfere with the effectiveness of birth control pills. Discuss using other methods of birth control with your doctor. Do not start or stop any medicine without doctor or pharmacist approval.

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. Symptoms of overdose may include drowsiness, lightheadedness, dizziness, muscle weakness, confusion, loss of coordination, nausea, nervousness/irritability, unusually slow or fast heartbeat, headache, tremors, hallucinations, unconsciousness, slow or shallow breathing, or seizures.

NOTES: Drink plenty of fluids, especially water while taking this medication. It will help to break up mucus and clear congestion.

MISSED DOSE: If you miss a dose, take it as soon as remembered; do not take it if it is near the time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.

STORAGE: Store at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from heat and light. Do not store in the bathroom.

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.