DRUG INTERACTIONS: Tell your doctor of all nonprescription and prescription medication you use, especially of: H2 blockers (e.g., cimetidine), fluconazole, theophylline, aminophylline, erythromycin. Also report use of drugs that make you drowsy, such as: narcotic pain relievers (e.g., morphine, codeine), psychiatric medicines, other anti-anxiety drugs, anti-seizure drugs, certain antihistamines (e.g., diphenhydramine), other muscle relaxants, sleeping pills, sedatives. 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 confusion, slow reflexes, clumsiness, deep sleep, and loss of consciousness.

NOTES: Tests such as breathing rate and blood pressure are done periodically during treatment.

MISSED DOSE: If you miss a dose, contact your doctor to establish a new dosing schedule. Do not "double-up" the doses.

STORAGE: Store at room temperature between 59 and 86 degrees F (15-30 degrees C) away from light and moisture.

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.