To report any serious adverse events associated with the use of this drug, please contact the FDA MedWatch program using the contact information at the bottom of this page.
Information for Healthcare Professionals: Sildenafil (marketed as Viagra and Revatio), Vardenafil (marketed as Levitra), Tadalafil (marketed as Cialis)[ARCHIVED]
Questions and Answers about Viagra, Levitra, Cialis, and Revatio: Possible Sudden Hearing Loss[ARCHIVED]
Regulatory History for Cialis from Drugs@FDA
includes labeling and approval letters