Hi, I have bad knee joints. I started using Instaflex with the ad you can try it for free. The catch is you have to give them your payment in advance. After one month use, I saw no difference so I figured I'd give it at least three months. So, they automatically charge you after the first month. Then when I realize this product is a fraud, I go to try and cancel, and there's no cancellation. I had to go to my bank to actually make them stop paying them for a product that does not work!
Bottom Line: No, I would not recommend this to a friend