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May 27, 2005
Reports of Blindness Surface Related to use of Viagra
The U.S. Food and Drug Administration said it has received about 38 reports of the rare condition among users of Viagra, four reports of blindness among users of Eli Lilly and Co.'s Cialis and one report of the condition in men talking Levitra, made by GlaxoSmithKline Plc.
Pfizer said outside of clinical trials, Viagra has been used by more than 23 million men worldwide over the past seven years. It said reports are extremely rare of visual loss due to the condition known as non-arteritic anterior ischemic optic neuropathy (NAION).
"FDA is aware of these reports but has not determined there is a cause and effect due to use of Viagra ... We're working with the company to make sure this information is available to doctors and patients," FDA spokeswoman Susan Cruzan told Reuters.
Posted by Diabetologica at May 27, 2005 11:59 AM