Is Mirena Coil Safe If Suffering From Gilbert Syndrome?

Hi I am a 31 year old female, I was diagnosed with Gilbert syndrome a number of years ago. I have minor symptoms with it. I had the mirena coil fitted 4 months ago. When I was online reading about GS I found a piece about why suffers of GS should be careful with the pill and I saw in my booklet on mirena that it is not suitable for people with liver disease. Is the mirena safe for me? I have had no probles with it since I got it fitted.