Herpimax Cream contains Acyclovir 5% w/w, an antiviral agent indicated for the topical treatment of herpes simplex virus infections, including herpes labialis (cold sores) and herpes genitalis. Acyclovir acts by inhibiting viral DNA polymerase, thereby preventing viral DNA synthesis and replication. This mechanism effectively reduces viral proliferation, alleviating symptoms and promoting faster lesion healing. Herpimax Cream is applied directly to the affected area, typically five times daily for 4 to 5 days or as prescribed by a healthcare professional. Early initiation of therapy at the first sign of outbreak enhances therapeutic outcomes. The formulation is intended for external use only and should not be applied to the eyes, mouth, or mucous membranes. Common adverse reactions may include mild local irritation, burning, or stinging at the application site, which are generally transient. Caution is advised in patients with known hypersensitivity to acyclovir or any cream excipients. Herpimax Cream is contraindicated in individuals with a history of hypersensitivity to acyclovir. It is essential to maintain hygiene and avoid contact with others during active lesions to prevent viral transmission. Consult a healthcare provider for appropriate diagnosis and treatment recommendations.