Toby was diagnosed with grade 2. However, I think it is only grade 1. He has only had an episode about 3 or 4 times and he is a little over 1 1/2. It lasts for a couple of minutes and then he is back to his rambunctious self. Our vet recommended Glucosamine too. I should have asked more questions, but I am now wondering how much do you give them and is there a particular brand that is best? They said that you can get it at a pet store or simply give them a pet dosage of what a human would take. Does this sound right?