Fast Acting Lip Treatment for Cold Sores Abreva Docosanol 10% Cream is a cold sore treatment that acts fast to tackle cold sores at their source. Formulated with docosanol 10%, this fever blister and cold sore medication helps to shorten the duration of tingling, pain, burning and itching associated with cold sores if used as directed at the first sign of a tingle. Unlike other cold sore remedies that just soothe symptoms, Abreva Cold Sore Treatment penetrates deep to create a barrier around healthy...