I'd be surprised if she was allergic to shark, but I guess it depends on how specific the allergy is...
If you do use it, try to get something with a guaranteed analysis, because often many (not all) supplements are not regulated, and one pill/capsule etc may be effective when the other is not, differing consistencies, etc...
Oscar has Osteoarthritis, he takes Fish Oil(but I imagine you might be able to find this in other then fish) Omega 3 supplements, Cosequin DS, and Tylenol 3's for the occaisional sore day (he cannot take NSAIDS because he takes Prednisone daily) and they are cheap. Ideally I'd give him Tramadol and Cartrophen (I believe this is the same as Adequan), but until I know he NEEDS it, I can't really afford to give it to him; The joys of a budget
The thing to know about chronic pain is, its really important to break the cycle, because the longer the pain exists, the more sensitive the dog becomes to it, so it will hurt more and more
Often I find one dose of pain meds and a couple days of shorter("round the block") easy walks without our "exercise" and he feels tons better.
I can only please one person per day. Today is not your day, tomorrow doesn't look good either.
"You didn't know of the magical powers of the break stick? It's up there with genies and Harry Potter as far as magic levels go." SisMorphine 01/07/07