The FDA is not authorized to review dietary supplement products for safety and effectiveness before they are marketed. The manufacturers and distributors of dietary supplements are responsible for making sure their products are safe BEFORE they go to market
They are expencive because they need to make sure that its not going to expire. Its easy to make. And they dont have stoves. They have to come already. (sorry if this is wrong please correct me if so. good luck)
Sean should make sure he doesn’t stretch out o fast it for too long that can cause more harm then help, make sure he is doing it correctly. Make sure it is a controlled stretch