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There may be rare occurrences of priapism or painful, prolonged erections. This is a serious condition that requires immediate medical attention. Patients should seek prompt medical attention if their erection lasts longer than four hours. Who should not take Cialis (Tadalafil)? Cialis (Tadalafil) should not be used by patients taking nitrates (such as nitroglycerin tablets or patches) or any alpha blocker other than FLOMAX 0. 4mg daily because the combination of these with Cialis (Tadalafil) could significantly lower blood pressure and lead to fainting or even death in some men. Can Cialis (Tadalafil) be used with other treatments for impotence? The safety and effectiveness of Cialis (Tadalafil) when used with other treatments for impotence has not been studied. viagra knock off what is viagra used for 1what is cialis europe cialis central viagra drug
