You should read its product description carefully to see if it is pure testosterone or testosterone. If it is a pure testosterone supplement, don't buy it, because it is actually a hormone; If it is a testosterone tonic, you can buy it, because the human body itself contains testosterone (only men have it), which only promotes the production of testosterone.

But I wouldn't recommend any one, whether it's pure testosterone or testosterone-promoting, because in fact, squats and hard pulls can also promote the synthesis of testosterone, so people who really know how to keep fit will do several sets of squats and hard pulls at first to promote the body to produce testosterone by itself, and then do isolated actions.