After doing much research, checking out studies and listening to various sources, including radio talks, forum discussions, talks with my doctor, it seems that Tribulus
does not actually increase testosterone. What it does do is increase libido, and this is something I can honestly say I felt. Apparently people take tribulus
and and feel the increase in libido and attribute that to an increase in testosterone and this is not the case. Taking this before bed and when I woke up did nothing but give me vivid sexual dreams and make me wake up with a hard-on strong enough to hang wet towels on but I do not attribute this to an increase in my size or strength whatsoever. A solid workout routine and eating right will contribute to your size, this supplement will not.
That being said I am going to continue to purchase this purely for the libido increase! my friends and I take 1 -2 caps before we go out just to have that extra 'kick' and motivation to pursue chicks and it is great for that. If you take two of these caps before sex you will notice you last much longer and are much more hornier (which is always fun). Also the dreams I have when I take this before bed are almost great enough alone to justify buying this supplement.
I gave the effectiveness a 1 in terms of what this product is marketed for (testo increase) but I give it an 7.5 for effectiveness in terms of (temporary) libido increase.
Don't take it looking to increase testosterone. follow the research to confirm that. But this isn't a bad supplement to have and take before going out!