Greetings, Fred. I had RRP in Feb 08. My doc prescribed Cialis 5 MG 1 or 2 X a week after I had my catheter out. I didn't seem to need it - got about 80% erection 2 weeks post surgery. I called the office, talked to the doc's nurse and she said if you don't need it don't take it. In retrospect that was a mistake. I should have gone ahead and taken it whether I needed it or not. As time went on I found that I never got more than 80%. When I had my 90 day check up, my doc said take the cialis or levitra whichever works best for you (there is a different regimen for viagra and he said we would use that as a last resort). The cialis worked fine and so did the levitra and I was back to 100% with either. I hope over time that I may not need it but as long as it works, use it.
The only side affect I had with levitra was a stuffy nose and flushed face. The cialis didn't seem to cause the side affects but you can't get generic cialis. However, I probably would have paid the higher USA price, but after I had taken 10 doses or so of the levitra, the side affects seem to have gone away.
By the way, I ordered generic levitra from alldaychemist and it works fine at about 10% of the cost of what you pay in the USA. David