You're not a rat. You're human so why use something tested on rats? Your test booster has to boost your testosterone levels - not a rodent's. ZEUS is the only test booster that's clinically proven to boost testosterone levels in humans. ZEUS blasts your testosterone to extreme levels. THE SCIENCE ZEUS is clinically proven to increase free testosterone levels in humans by an amazing 98.81% in only 8 weeks.1 Armed with Testofen, ZEUS's Test Booster Complex contains steroidal saponins, sapogenins and furostanol saponins - that will help you build a bodybuilders body. ZEUS binds with your muscle cell receptors, instantly changing the "operating instructions" of your muscle cells, forcing them to increase protein synthesis - so you get stronger and build muscle - FAST!2,3,4 ZEUS simultaneously increases your heat generation, so you burn fat for fuel. Best of all, ZEUS keeps working and stimulates post-workout muscle building, so you recover faster than ever!