Isosorbide
Isosorbide was previously available in an oral formulation for the reduction of intraocular pressure. It was approved by the FDA in 1980, but has since been discontinued. Currently, isosorbide is an organic nitrate currently available in the [isosorbide mononitrate] and [isosorbide dinitrate] forms, and is used for the prevention of angina. Refer to these drug entries for more information.