Drug Strengths: Aciclovir Intravenous Infusion 250 mg vial Aciclovir Intravenous Infusion 500 mg vialPhysical Form: Injection LiquidFunction: Antiviral.It is used for the treatment of herpes simplex virus infections, chickenpox, and shingles. Other uses include prevention of cytomegalovirus infections following transplant and severe complications of Epstein-Barr virus infection.