* you are allergic to any kind of ingredient in Cialis
* you have extreme kidney problems as well as will certainly be taking Cialis daily
* you have serious liver troubles or specific hereditary degenerative eye issues (eg, retinitis pigmentosa).
* you have certain heart issues (eg, unstable angina, angina during intercourse, severe heart failure, uncontrolled irregular heartbeat), reduced blood pressure, or uncontrolled high blood pressure. 비아그라 오프라인 구매
* you have had a heart attack within the past 90 days or a stroke within the previous 6 months.
* you are taking nitrates (eg, isosorbide, nitroglycerin) in any type of type (eg, tablet, capsule, spot, lotion) or nitroprusside.
* you have been suggested by your doctor to avoid sexual activity because of heart issues.
* you use certain entertainment medicines called “poppers” (eg, amyl nitrate, butyl nitrate).