A cold sore is caused by the herpes simplex virus type 1. Many adults may find that they have been exposed to the initial infection during childhood, after sharing a drink or a kiss with someone who already has the virus. In approximately a third of adults, the type 1 herpes simplex virus can reactivate through everyday factors such as cold & flu or ultraviolet light. The Zovirax Cold Sore Cream contains the active ingredient aciclovir, which is a commonly used antiviral medicine that treats viral skin infections and reduces the risk of their reproduction.
There are four stages of a cold sore; the tingle stage, the blister stage, the weeping stage and the scab stage. The first signs of a cold sore include the sensations of tingling, burning or an itchy feeling where the sore is going to appear. You can use the scientifically proven Zovirax Cold Sore Cream at any one of these stages to lessen its impact on your life; however, using Zovirax Cream at the tingling stage may help prevent the cold sore from developing altogether.