Zovirax cream (aciclovir) has been clinically proven to be able to prevent cold sores from appearing. The cream contains the unique antiviral agent Acyclovir which prevents the cold sore virus from replicating. Acyclovir is an antiviral drug, a synthetic nucleoside analogue, that is active against the herpes viruses, including herpes simplex 1 and 2 (cold sores and genital herpes), varicella-zoster (shingles and chickenpox), and Epstein-Barr virus (mononucleosis).

Zovirax is probably best known as a cream used to treat oral herpes. Zovirax is however also used to treat other types of Herpes such as genital herpes, chicken pox and shingles.

Zovirax contains Acyclovir which is an antiviral agent. It is one of many brands of antiviral medicine containing Acyclovir but Zovirax is one of the best known. Zovirax is not a cure for Herpes but it will treat the symptoms of Herpes and reduce further outbreaks. Zovirax will reduce the duration, frequency and severity of Herpes symptoms as well as reduce the risk of spreading.

Zovirax Cream has been used for over 10 years to more that 22 million patients around the world. The tingling, burning or itching sensation, on your lips or around your nose, that you get before a cold sore develops is your reminder to use Zovirax cream as soon as possible. If used at this stage, Zovirax cream can prevent the cold sore blister from appearing.