Should I Take Liver Support Supplements on Accutane?

I'm 110lbs and was just given 40mg Accutane from my GP (no derm in my area) I took it 8 years ago, it worked but I feel that it has affected my liver as if I drink(which is occasionally) I get an awful hungover the next day from just one or two drinks (I always eat before drinking). This makes me scared to take this medication again as I worry I may cause more damage. I am waiting on my blood work before I go ahead with my prescription. Should I take liver support supplements and if so what?