My cat has been taking Cosequin for quite some time now. It makes a big difference in his mobility. He's 17 and still gets up and down stairs, plus jumping on and off our deck into the garden.

I've taken glucosamine and MSM for years as well. A few months ago, I stopped taking MSM and only take glucosamine now. I take it in powdered form which is quite inexpensive and easily digested. I won't take chondritin supplements because it comes from sharks fins ( I think that's the part they use) and I am against killing sharks. I've since read that studies with chondritin have not shown benefits.