DESC: The positive effects that Tribex 500 has to offer are numerous. Not only does Tribex 500 raise your body's testosterone levels naturally, but it also prevents the negative effects of estrogen. Tribex 500 powerful effect alone can add 5 pounds of muscle to your frame with little to no extra effort on your part. Imagine gaining 5 pounds of quality muscle without having to make any major changes to nutrition and training program - the results you can receive with Tribex 500 are awesome.