Do you have a male youngster at home who started to be self-conscious on his physical appearance? A teenager who inquire you about the changes in his body? Â Then, don’t be surprised if one day he asks you about testosterone boosters. Testosterone boosters are supplements which increase the testosterone level of the user allowing him to gain muscles. Some athletes also take this kind of supplement to increase their strength and stamina. But of course, whatever we take inside our body will most of time have a side effect. So be cautious, especially to teenagers who may want to try this kind of supplement. The effect of taking testosterone boosters at a very young age might cause a drastic decrease on your testosterone level later in your life. So before taking one, make sure that you do a thorough research about it and don’t just go with the flow.