Herpex

Aciclovir, also known as acyclovir, is an antiviral medication. It is primarily used for the treatment of herpes simplex virus infections, chickenpox, and shingles. Other uses include the prevention of cytomegalovirus infections following transplant, and severe complications of Epstein–Barr virus infection. It can be taken by mouth, applied as a cream, or injected.

Topical aciclovir is specifically indicated for herpes simplex virus skin infections such as cold sores and is not effective or recommended for non-viral conditions like acne, where it may cause irritation without benefit.