Hello! We took our boxers to the vet for a normal checkup and they told us that our male has arthritis. They suggested Glucosamine and gave us a sample bag of treats that retail for $50! My husband swears it is working for him, so we would like to continue using Glucosamine. I am wondering if there is a cheaper way to give it to him, though. Does anyone buy over-the-counter human glucosamine to give to their dogs? I can get it at a good price at Costco. Any suggestions would be very helpful!