Find out what it is and does, and whether it needs to be tapered off of to keep you from a severe reaction or withdrawal
an RA med can cause an extreme flare up in your RA. If your doctors decide to switch you to a more liver friendly medication than the one you are on, that's great, but don't do anything without the doctors knowledge and approval.
People treat all the time with other conditions, high blood pressure, heart disease, diebetes, etc. and so it's not impossible.