Thanks for the response. When I attempted to share my theory of 7 year use of Gabapentin for chronic back pain, as the cause of my ED problems, my urologist strongly disagreed, and stated his opinion was my use of 2 different Blood pressure meds, and a cholesterol medication. I don't know what to believe, as my family practitioner thought the issue was more related to me being 70 years old. Anyone else with a thought?