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 severe drowsiness , unconsciousness, unusually slow or fast heartbeat, slow or shallow breathing, cold or clammy skin, dizziness, change in the amount of urine, unusual change in the size of pupils, unusual movements of the eyes, sweating, or loss of coordination.

NOTES: Do not share this medication with others.

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

STORAGE: Store at room temperature away from moisture and sunlight. Do not store in the bathroom. Do not freeze liquid forms of this medication.

MEDICAL ALERT: Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA), or 1-800-668-1507 (Canada).

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.