Yea bro I'm struggling with this too.... Prami (liquid) gave me nausea, no increase in libido, so I stopped. Probably should have given it more time so don't take my word as final. As far as Caber, I can't justify spending 200$ on something commonly faked. So instead I tried cheaper from a reliable source. Seemed to help itchy nipples, but no effect on libido. So all in all I'm at as much of a loss now as when I started.
I know its not really helpful but that's my experience. IMO, shell out the cash for the real deal from a real source.