The following information is a summary. It is not intended to replace a doctor's instructions.

COMMON USES

This medicine is an antiviral used to treat herpes zoster (shingles) and genital herpes. It may also be used to treat other conditions as determined by your doctor.

BEFORE USING

INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. Inform your doctor of any other medical conditions, allergies, pregnancy, or breast-feeding.

DIRECTIONS

Follow the directions for using this medicine provided by your doctor. This medicine may be taken on an empty stomach or with food. TO CLEAR UP YOUR INFECTION COMPLETELY, continue taking this medicine for the full course of treatment, even if you feel better in a few days. Do not miss any doses. IF YOU MISS A DOSE OF THIS MEDICINE, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do NOT take 2 doses at once.

CAUTIONS

If your symptoms do not improve within a few days or if they become worse, check with your doctor. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor or pharmacist. IT IS UNKNOWN IF THIS DRUG IS EXCRETED in breast milk. DO NOT BREAST-FEED while taking this medicine.

POSSIBLE SIDE EFFECTS

SIDE EFFECTS, that may go away during treatment, include headache, nausea, vomiting, diarrhea, or tiredness. If they continue or are bothersome, check with your doctor. CONTACT YOUR DOCTOR IMMEDIATELY if you experience hallucinations, disorientation, or confusion. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.

OVERDOSE

If overdose is suspected, contact your local poison control center or emergency room immediately.