All best of luck Jill, and I really feel for you. I'm on Enbrel, 2 anti-depressants, a sleeping aid, and pain meds. They all hurt the liver. Any drug you take, any vitamin you take, any energy drink you drink, any vodka collins (etc), any caffiene, is processed in your liver. There's no escape. There's only the choice between drugs that are hard and less hard on the liver, and any doctor that tells you different is not well educated or does not have a complete viewpoint.
What I do, since I need to be on so many meds, is do a 3 day water fast once a month. It's pretty easy, and incredibly good for anyone, but especially for those of us with autoimmune disorders. It gets rid of toxins, cleans and rests the liver and kidneys, and relieves inflammation.
Also, I take supplements that are supportive and cleansing for the liver. This is really important, and doctors will either deny it or sometimes act contempuously because it's "not science." (yes, it is.)
The one I take, though there are many, is called Daily Balancer, by Wellness Resources (you can find their website online, I promise I don't work for them, I just like their supplements and loads of info about scientific studies and the like). It has, among other scientific things, milk thystle (detoxes the liver) and dandelion (supports the kidneys). These things are well known, safe, and really help.
Mention them to your doctor, and of course be careful since I don't know you and don't know the specifics of your illness or treatment, and I'm not a doctor (and neither do I play one of TV). But these things have helped me a lot. I've been on heavy meds for 7 years now, and my so far my liver is testing out fine.
All best to you truly,