ED pills and eyes
Sildenafil (Viagra) opened a lot of eyes when it revolutionized the treatment of erectile dysfunction (ED) in 1998. The drug was accepted so rapidly that when two similar medications, tadalafil (Cialis) and vardenafil (Levitra) were approved in 2003, they caused hardly a blink. From the very beginning, though, visual disturbances were listed among the side effects of all three ED pills. Although most of these side effects are mild and temporary, one can be serious and permanent.
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