Who Should Not Use Generic Viagra? part 3

Generic Viagra should not be used in patients who have or had prolonged erection greater than 4 hours and priapism (painful erections greater than 6 hours in duration). Otherwise this drug would increase the incidence of this condition.

Patients who are denied to have sexual activity also should not make use of this drug.

Patients with the following underlying conditions can be especially sensitive  to generic Viagra ' those with left ventricular outflow obstruction (e.g. aortic stenosis, idiopathic hypertrophic subaortic stenosis) and those with severe impaired autonomic control of blood pressure.

There is no studies have been made on the safety of Viagra in the following groups; if prescribed, caution should be exercised: Patients with resting hypotension (BP <90/50) or hypertension (BP >170/110); cardiac failure or coronary artery disease causing unstable angina; retinitis pigmentosa (a minority of these patients have genetic disorders of retinal phosphodiesterases). Caution is required in patients who have suffered a myocardial infarction, stroke, or life-threatening arrhythmia within the last 6 months.  A prescription is required to buy Viagra