IMO/IME it is far superior to trib. TBH I did use them under completely different circumstances and to be more precise:
1) From personal experience:
-I used tribulus as a body building supplement and the only thing I got was nasty erections all night long
-I used epimedium as a way to slow down/stop the libido fall which had already started by using Rebound XT and I don't now if there were other factors involved or if it was plain luck but when I started taking it the fall stopped and I could dare say, it went up a bit and remained in satisfactory levels until I finished RXT.
2) From scientific data:
Little research has been made for both products, but by those few studies
-Epimedium was shown to indeed act as a vasodilator
-Tribulus was shown to increase function and sperm count. Failed in every other aspect
So you have something that's supposed to be taken as a libido enhancer and it indeed does that and you have something more expensive which is supposed to raise libido/LH/Testosterone/Strength and succeeds only at the libido department while definitely not being better at that than the previous supplement
myprotein has it here: http://www.myprotein.co.uk/bulk-powders/herb-extracts/horny-goat-weed-extract/
EDIT: Although something similar has not been tested with trib(since at such amounts trib is toxic), epimedium was found to raise testo levels, however at enormous dosage so it would be impractical -if not dangerous- to try a dosage such as this.
post edited by beholder69 - 2007/06/19 18:21:51