I am 78 years old and have been taking one Vardenafil HCL 20mg(Levitra) tablet weekly early morning for several years with no side effects outside of facial flushing. Without it I am sexually disfunctional. My blood pressure runs about 136/64 with no medication. My urologist prescribed Avadart several years ago and recently added Uroxatral without mentioning any of its restrictions that I read in the fine print. Is there someway to alter the dosage and return to the weekly use of Levitra without dangerous side effects?