For the treatment of Herpes simplex virus infections of the skin and mucous membranes, including initial and recurrent genital herpes.
For the suppression (prevention of recurrence) of Herpes simplex infections in immunocompetent patients.
For the prophylaxis of Herpes simplex infections in immune-compromised patients.
For the treatment of Varicella (Chickenpox) and Herpes zoster (Shingles) infections.