I agree get your liver enzymes checked.
My enzymes had always been ok until my GI switched me to MEZAVANT and I had many side effects and ones was extremely itchy skin.
Noone including my Gi ever related it to the medication and so I took it upon myself to stop it and go back to Salofalk which I was on previously.
Well the itching stopped.
My enzymes have gone down not normal yet but much better.