I never write reviews but this helped our dog so much I wanted other people to know. Our 10 year old Sheltie/Beagle mix had become lethargic and only wanted to lay around, he acted like it hurt him to walk. He had a malignant tumor removed just over a year ago and we were afraid the cancer was back. We received the Cosequin DS 9 days ago and within just 2 to 3 days we noticed a marked improvement. Now he's back to almost 100% of his old self. We don't have any problem giving him the tablet, it's like a treat for him. It isn't cheap but it's worth every penny to have our dog back.