After consulting with your medical doctor, if you are cleared to begin taking a Nugenix product, then comes the time to select the right product for you. If you are experiencing low levels of testosterone, try starting with the Free Testosterone Booster. This will allow you to increase your levels, and get your feet wet when it comes to trying a new supplement. You can also stack the Nugenix Estro-Regulator on top of the Testosterone Booster to have a greater chance of success. These two are also great together when it comes to working out at the gym and hoping to gain more muscle mass or improve the overall strength in your body. They work together to not only boost your testosterone levels , but to also reduce your estrogen levels, which will help you achieve more power in your workouts.