Originally Posted by
Eastbay1K
If your erection has lasted over four hours somewhere over the North Atlantic, and you are wide awake, you'll know it is not reliable.
If you've got this problem from a sleep aid, you might have been given Trazodone (the famous side effect is priapism).
http://psy.psychiatryonline.org/cgi/...t/46/4/367.pdf
Though Trazodone is pretty effective for sleep.
http://en.wikipedia.org/wiki/Trazodone