I advise you not to try something that has gone up online. If it had been useful, China's CBA would have surpassed the NBA, and everyone has grown taller. These are all means for unscrupulous merchants to cheat money by using the psychology of wanting to grow taller. If they have side effects, it's not worth the loss. If you want to grow taller, you must keep exercising on your own, don't stay up late at night, and develop good living habits. I hope I can help you.