Good Afternoon,
This is my first response, but I had to mention a product that may help. The name of the product is Sea Jerkey and it's made from sea cucumbers and full of natural Glucosamine . It looks like beef jerkey and most dogs love it. You can use it as a treat. I heard about it at a seminar on canine health. You can find it at feed stores & pet stores. I just looked it up on the net and it's made by NutriSea. I have a young lab and as he matures it will be part of his cupboard. I should probably try it myself...
Good luck,
Gary & Fatch