<unk>  is used to prevent eye irritation brought on by allergic conjunctivitis. It is a H1 histamine receptor antagonist. It was approved by the U.S. Food and Drug Administration (FDA) in July 2010, under the trade name Lastacaft.
Alcaftadine
Loratadine
Rimantadine
Desloratadine
Amantadine
Rupatadine
Quifenadine
Tecovirimat