sudden eyesight loss in one or the two eyes. Unexpected eyesight decline in a single or the two eyes generally is a indicator of a significant eye trouble known as non-arteritic anterior ischemic optic neuropathy (NAION). Halt using VIAGRA and connect with your Health care provider without delay if

Sexual stimulation that contributes to an erection causes the creation and release of nitric oxide from the penis. Nitric oxide causes an enzyme, guanylate cyclase, to provide cyclic guanosine monophosphate (cGMP) which is largely chargeable for increasing and reducing the size of blood vessels carr