Well, then you will not want to add any ephedrine to the mix. The EC combo totally fucks with my sex drive as well. Maybe try a Norephedrine based thermo instead of that of an ephedrine based, as many have reported better libido....but you have not mentioned anything about the E or N, so as for the caffeine, I don't really know...except that you may want to add some ORAL yohimbine, which seems to help a lot for a few weeks at least. That shit definately gets the juices flowin' for a legalized aphrodesiac. Just a thought.
BMJ