DRUG INTERACTIONS: This drug should not be used with the following medication because a very serious interaction may occur: zidovudine. If you are currently using this medication, tell your doctor or pharmacist before starting ribavirin/interferon alpha-2b. Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: barbiturates (e.g., phenobarbital), didanosine, theophylline, vidarabine, zalcitabine, drugs that can depress the immune system (e.g., anti-cancer type). 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.

NOTES: These products have been prescribed for your current condition only. Do not use them later for another infection or give them to others. A different medication may be needed in those cases. Laboratory and/or medical tests will be performed to monitor for pregnancy, side effects or response to treatment (e.g., blood counts such as CBC, platelets).

MISSED DOSE: If you miss a dose, contact your doctor or pharmacist to establish a new dosing schedule.

STORAGE: Store this product in a refrigerator between 36 and 46 degrees F (2-8 degrees C). The capsules of ribavirin may be stored separately at room temperature between 59-86 degrees F (15-30 degrees C). Properly discard of any unused medications after the expiration date.

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).