Levitra, co-marketed by Bayer Pharmaceuticals, GlaxoSmithKline, and Shering-Plough, is a sexual stimulant used to treat erectile dysfunction (ED) in men. The FDA approved Levitra in 2003. ED drugs, such as Viagra, Cialis, and Levitra, have been linked to serious side effects, including heart failure, blurry vision, and optic stroke. In 2005, the FDA required manufacturers of ED drugs to include a warning on the drug's packaging informing consumers of the risk of non-arteritic anterior ischemic optic neuropathy (NAION), which is characterized by the sudden loss of sight caused by reduced or blocked blood flow to the optic nerve. In 2007, manufacturers of ED drugs were required by the FDA to update warning labels to make consumers aware of the risk of sudden hearing loss associated with taking Viagra, Cialis, and Levitra. If you or someone you love has experienced side effects from an ED drug, you may be entitled to compensation for your injuries. Contact Gunn Law Group today to discuss your case.