Aciclovir 5% Cream

Aciclovir 5% cream is an antiviral medication used to treat cold sores around the lips. It is available under various brand names, including Zovirax, Virasorb, and Boots Antiviral Cold Sore Cream, all containing the same active ingredient.

Aciclovir prevents the herpes virus from multiplying, reducing the severity and duration of cold sores when applied early.

Apply a small amount of cream at the first sign of a cold sore, ideally during the tingling stage. Dab gently over the affected area using a clean finger or cotton bud five times a day for at least four days, continuing for up to ten days if necessary. Wash hands after application.

Common side effects include mild irritation, redness, itching, and dry skin. Rarely, allergic reactions may occur, causing swelling of the lips, face, or eyelids. Discontinue use if this happens.