Concurrent use of organic nitrates, nitrates and nitric oxide donors. Men with cardiac disease for whom sexual activity is inadvisable. Recent MI (within 90 days) or stroke (within last 6 months), hypotension (<90/50 mm Hg), unstable angina, heart failure, uncontrolled arrhythmias or hypertension.

Pregnancy Category :

A B C D X

Category B : Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women OR Animal studies have shown an adverse effect, but adequate and well-controlled studies in pregnant women have failed to demonstrate a risk to the fetus in any trimester.