Erazaban is a cold sores medicine that blocks the virus from entering healthy skin cells. Its active ingredient is docosanol, which is a component of human cell membranes. The active substance of the drug is vasazol (Doconazolum). 1 g of cream contains 100 mg of docosanol. Excipients: sucrose stearate and distearate, light mineral oil, propylene glycol, benzyl alcohol and purified water.