I’ve been using this product (FLEXACIL ULTRA) for over 5 years and my knee joints are much better than before I started using Flexacil ultra, my surgeon told me I had about 18 months left before I would need a replacement knee joint so I started trying different joint medicine which sadly didn’t help until I heard of Flexacil ultra , after about a month of taking Flexacil ultra I noticed that my knee no longer made a clicking noise when I stood up from a sofa etc and the pain had virtually gone…I would recommend Flexacil ultra to anyone with joint issues and take as prescribed for a month to 6 weeks and hopefully you will also notice the positive difference they make to your poor worn knee joints, Flexacil ultra saved me from a joint replacement surgery. 😊👍