Impotence
The Department of Food and Drug U.S. FDA recently approved the revision of the erectile dysfunction drugs sildenafil, vardenafil and tadalafil, marketed by Pfizer as Viagra, Bayer GlaxoSmithKline (GSK) and Schering-Plough as Levitra '.
The reason is because it has been reported to the FDA ceguera.Segn reported in a statement, these cases of vision loss have been detected in a small number of reports were related t optic neuropathy, a condition in blocking the blood flow to the optic nerve.
Specifically, the FDA warned patients taking “Viagra”, “Cialis” and “Levitra” to stop the intake of these drugs and to consult their doctor if they experience sudden or decreased loss of vision in one eye or both.
Also, according to U.S. authorities, patients taking or considering taking these drugs may have to inform health care professionals if they have ever had severe loss of vision, as they would be at increased risk of developing the disease.
In any case, the FDA makes clear that to date it is not possible to determine whether these oral medicines for erectile dysfunction were the cause of vision loss or if the problem is related to other factors such as hypertension and diabetes, or a combination of both.
