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DRUG INTERACTIONS: Tell your doctor of all nonprescription and prescription medication you may use, especially: other adrenaline- like drugs (e.g., pseudoephedrine), anticholinergics (e.g., benztropine), xanthine products (e.g., theophylline, caffeine), corticosteroids (e.g., prednisone), "water pills" (diuretics- e.g., furosemide), beta-blockers (e.g., propranolol), MAO inhibitors (e.g., furazolidone, selegiline, phenelzine, moclobemide, linezolid, procarbazine), certain antidepressants (e.g., amitriptyline). 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 fast or irregular heartbeat.

NOTES: Do not share this medication with others.

MISSED DOSE: This drug is generally prescribed only as needed. For chronic daily use, consult your doctor or pharmacist for missed dose advice. Do not "double-up" the dose to catch up.

STORAGE: Bottles: Store unopened bottles at room temperature 77 degrees F (25 degrees C) away from light and moisture. Opened bottles may be stored at room temperature for 30 days. Single use vials: Store unopened vials at room temperature away from light and moisture. Discard vials after one use. Do not freeze.

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.