Zovirax is used for the treatment of cold sores. The active ingredient is aciclovir, an antiviral agent. Apply at the first signs of a cold sore (such as tingling and itching). It can also be used to speed up healing if one has already appeared and shorten the duration of pain.
Start using the cream when you get the first signs of infection. You may see skin blisters or be able to recognise the tingle sensation that means a blister will soon appear. Spread a thin layer of cream onto the cold sore about every 4 hours during your day (5 times per day), using a cotton bud.
