First off I can say that tribulus and I get along great! I like this being in this product for sure! Between this and d-pol I saw unbelievable strength gains. Like I mentioned before I went in the gym not hoping but knowing I was going to crush the log book with almost no effort. Really had the alpha male feeling nearly every workout and libido was good during this run. I don't like that it seemed as if I had to take at least 6 a day to get the peak performance out of the product because when teamed with d-pol which is how I would prefer to run this product it could get a bit pricey. Definitely worth it though! The AI and cortisol properties were not incredibly noticeable at the 4 pill dose but did improve very slightly when the dose was pushed to 6 and up. I think this product would be good to use for the AI properties while just natural cycling but wouldn't probably use it in a PCT situation as my full out AI in my honest opinion.