My new favorite Pre-Workout Supp!

Total noobie to the forums, so don't kick the cr*p out of me ha!

A while back I started reading into various supps to try find some new pre-workout possibilities for my stack.  I stumbled on icariin extract (used in many supps in varying strengths known as epimedium apparently), anyways after some googling I found a uk retailer selling 60% icariin 500mg capsules.  Im 3 months in and this stuff is awesome, my stamina has come up 10 fold (I would almost stick it under the test booster section) 
p.s. no side effects as yet either.

Has anyone else had success with icariin extract, in terms of test boost and increased overall endurance? 
I see answers from yes's to straight no's so just wondered if im one of a minority before I start making recommendations to my fellow gym monsters.

laters
T

Where can I buy it !??!

''If one is after quick results one never learns an art.''

Erich Fromm