Aciclovir (Xyclovirax) 200mg Antiviral Tablets, 100’s is an antiviral medication used to treat infections caused by the herpes simplex virus (HSV), including cold sores, genital herpes, and shingles. It helps reduce the severity and duration of outbreaks by inhibiting viral replication. Suitable for both initial and recurrent infections, it is taken orally as prescribed by a healthcare professional.