I don’t think my big boy Hank could have done without his (TPLO on second leg, 1st TPLO went without a hitch, the second leg’s healing was going very slow with constant setbacks until about 4 months after surgery we started him on GlycanAid HA. The improvement was evident after 3 weeks but as time passed I thought he might always favor the leg when first arising but when I wasn’t paying attention he came back 100%. Amazing! You worry & worry, then voila! I will always keep him on this supplement, even though we are 8 months post-surgery, I have worked it into my budget. Thanks again for your great product, advice & encouragement.