I haven’t looked into any data on testosterone increase. I really haven’t been involved in the product at all, except for one thing – maybe 8 years ago or so, another person at Biotest had the idea of combining Vitex agnus castii extract with TRIBEX for better efficacy.
I did try an informal in-house trial on that and as my part in it, found then-TRIBEX, when combined with Solaray Vitex, to be a reasonable PCT in the context of 2 week cycles: definitely better than no PCT as well as being definitely better than then-TRIBEX alone, and good enough that I didn’t notice the difference relative to Clomid, other than not getting the increase in ejaculatory volume that Clomid can give. I did some substantial number of back-to-back cycles: a single cycle would be hard to tell. I did them as either 2 on / 2 off or 2 on / 1 off, not sure at this point. I tend to think the latter, though.
Now, 2 week cycles yield a much less difficult state of inhibition than longer cycles, so I never took that and suggested that this would be good for longer cycles, but it was suggestive of the Vitex addition being a good thing.
For a while TRIBEX then included Vitex as an ingredient.
By this time, it is now Alpha Male that combines Tribulus with Vitex, as well as other ingredients, while TRIBEX is now again Tribulus-only, though I understand, considerably improved in that regard.
I can’t take Alpha Male because I am one of the small percent (don’t know how many) that does not do well with Eurycoma longifolia. It makes me irritable to a degree that is beyond excessive. Just out of the question.
If not among those that can’t tolerate Eurycoma longifolia, I suppose that Alpha Male is the better product.
In any case the question is as simple as whether a given person feels better and has the impression that they perform better (whether in the gym or any other regard) on TRIBEX. It’s always a good idea to have periods of not using a product, and then reintroducing it after some period of time, to get reality checks on any impression that something works.
If it does work for the given person in a way they like, and there are many that feel that it does, then great.
However, if say someone posts that they aren’t making any progress in the gym, for example, my reply isn’t going to be “Well you ought to try some TRIBEX.” It isn’t the solution for enhanced athletic performance in most cases.
As for pro-sexual effects, I have no idea. I have no basis to come to any conclusion what others think on it, and it does nothing for me.