Docosanol 10% cream is a topical treatment for recurrent herpes simplex labialis episodes (episodes of cold sores or fever blisters). A saturated 22-carbon aliphatic alcohol, Docosanol exhibits antiviral activity against many lipid enveloped viruses including [herpes simplex virus] (HSV). Docosanol inhibits fusion between the plasma membrane and the herpes simplex virus (HSV) envelope, thereby preventing viral entry into cells and subsequent viral replication. ...