RE: E/C/A stack & sex life????
Flat mate who is a somewhat smarter than myself, states that the reproductive system shares the common similarity with the gastrointestinal tract (GIT) i.e. parasympathetic nervous system, so it would seem logical that if it effects one via altering the transmitter concentrations etc of the GIT, then it would also effect the reproductive system.
This would seem logical although technically ephedrine predominaently acts on the sympathetic nervous system (fight or flight), it would seem popssible that it has some parasympathetic action as well (digestion etc etc)
Hope that helps