that you should ask your vet. There may be a human version, but rimadyl is strictly made for animals. But it is an NSAID (non-steroid anti inflammatory drug), and there are some of these for humans. I would not know how safe or unsafe these are in dogs. I was on naproxen for a while, and it is an NSAID of a different type than rimadyl. But if the price is prohibitive for rimadyl, I would be surprised that your vet could not help you find another drug that would help. It never hurts to ask.
The difference between stupidity and genius is that genius has its limits. - Albert Einstein