I have tried both Levitra and Cialis in the past with little side effects other than the usual headaches. The problem is that I felt more effect later that evening and the next few days than an hour after taking it. Partially due to hobbying and trying to get healthy, I have lost 25 pounds and I discovered I no longer need them to get and keep an erection, however, I am only good for one round. I need oral for a second round. So, all in all, not so bad.
Bordello69, my heart goes out to you. Keep fighting the fight and good luck.