Zovirax Injection 250mg is an antiviral medication used to treat severe viral infections caused by herpes simplex and varicella-zoster viruses. This injectable formulation delivers the active ingredient acyclovir directly into the bloodstream, providing rapid therapeutic effects for patients with compromised immune systems or severe outbreaks. Zovirax is particularly effective in treating herpes encephalitis, neonatal herpes, and shingles in immunocompromised individuals. The 250mg dosage is tailored for intravenous administration in clinical settings.