Supplementing testosterone, creatinine and the like, but first of all, it is a prescription drug for treating diseases in China. Doctors can't buy it without a prescription, and doctors can't prescribe it. The second is that it has huge side effects on the kidneys. If you use it too much, you can't hang a dialysis bag for life. If you have to use it, then go to Russia to play. This is the latest country to sell drugs with guaranteed quality. Ask me if you have any questions.