I've taken the pills recreationally. Highly recommended when you expect your session to go for many hours, but you (the man) still have to be turned on. In other words, I a healthy male, did not get involuntarily erect by the pills.

EDIT: I hit puberty at 10yo. From 10 to about 19, my dick had a mind of its own. But since about that age, we have come to an agreement. Get hard and stay hard for as long as I ask, and I promise you'll never go hungry. The rest of the time, leave me the hell alone.

PS: It was miserable ~12.