1-Docosanol, also known as behenyl alcohol, is a saturated fatty alcohol containing 22 carbon atoms, used traditionally as an emollient, emulsifier, and thickener in cosmetics.
In July 2000, docosanol was approved for medical use in the United States as an antiviral agent for reducing the duration of cold sores. It is an over-the-counter medication (OTC). It is sold under the brand name Abreva among others.