I stopped with Glucosamine - following your advice because due to my glaucoma I’d better not take it - and in its place started using the preparations ASU forte and Chondroitin you recommended. This was 6 months ago for treatment of *** in my back. Since then I’ve been bothered less by a cracking feeling. I’ve already noticed a nice improvement for the knees, but for now I’m continuing with the treatment because I’ve heard that for the back it is better to continue longer. I have to be patient. So at the moment I am pleased with your products.