School of Medecine - Acyclovir is used to treat herpes infections of

Acyclovir is used to treat herpes infections of the skin, lip, and genitals; herpes shingles; and chickenpox. It does not cure herpes infections but decreases pain and itching and promotes healing. Sometimes acyclovir is given to help prevent the infection from coming back. Acyclovir also treats shingles and chickenpox infections. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

Acyclovir tablets or capsules should be taken by mouth, following the directions on the prescription label. Swallow whole with a full glass of water. Take your doses at regular intervals, with or without food, not more often than directed. Finish the full course prescribed by your prescriber or health care professional even if you think your condition is better. Do not stop taking except on your prescriber's advice. Special care may be needed for use of this medicine in children, contact your pediatrician or health professional.
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Penlac Use Penlac only on nails and immediately adjacent skin. Avoid contact with the eyes and mouth.