Virest contains acyclovir as an oral tablet. Virest is used to treat infections caused by certain types of viruses. It treats infections caused by viruses such as genital herpes. It is also used in treatment of infections caused by herpes simplex (cold sores around the mouth), varicella-zoster (shingles), and chickenpox.
Dose and Administration: Dosage is based on your medical condition and response to treatment. In children, dosage is also based on weight. Virest is taken by mouth with or without food, usually 2 to 5 times a day as directed by your doctor. Drink plenty of fluids while taking this medication unless your doctor directs you otherwise.
Caution: Continue to take this medication until the full prescribed amount is finished. Do not change your dose, skip any doses, or stop this medication early without your doctor’s approval.