@Jdhoffm
After 2 hours, I take FOUR 30 MG sudafed (the 4 hour not a 12 hour tablet) and TWO 25 mg Benadryl.
After my initial shot of 15 units (0.15 cc / 0.15 ml), my erection lasted 5 hours. I had already read about trimix undo solutions. I talk with doctor at 3 and 45 minutes. He had me take more sudafed (which I had taken at the 3 hour mark). My urologist also had me do a cold pack, but that did not help.
Soaking in a hot bath helped me more. I think the body is circulating blood to cool do the exterior of the body.