There are people who ingest emu oil, for which I would only consider the food grade version. I've only seen it used topically so would consider starting with that. There's a lot of research on it online and some of the healthcare industry has caught on so they sell a lot of emu-based salves, oils and ointments being sold for arthritis. Most of them have a lot of other ingredients that, as far as I can tell, don't do anything so would suggest trying straight emu oil. Preferably cold pressed and not processed in any way.