While trying to find a source for phentolamine (an ED drug) I came across dibenzyline. It inhibits the actions of adrenaline (a vasoconstrictor). Phentolamine can help those who suffer ED caused by perfomance anxiety. Dibenzyline is in the same class as phentolamine. It also prevents sperm being released during orgasm and can delay orgasm therefore treating premature ejaculation. I'm considering using it along with viagra in the hope that I can have much more intense erections. I think it would also help me to edge for hours on end. It is dangerous though, especially for those with pre-existing heart conditions. I might try making a topical from it which would reduce any systemic symptoms. Does anybody have any experience with either of these drugs?