Liver Inflammation, is Urostan the correct course of action?

My wife has been diagnosed with Liver Hepatitis with negative markers. There is not apparent reason for her liver inflammation. She was put on a decreasing dose of as steroid (predisone - not sure of the spelling). Her liver enzyme function returned to within the normal range. She was off the medication for at least 3 months. her recent test shows an increase in liver enzyme production. Her Alkaline phosphatase levels seem to operate in direct opposite fashion when compared to the AST, ALT and Gamma results. her doctor suggest that she go onto a course (3 months) of Urostan. We are not sure if this is the correct course of action as medical aids do not cover this drug. The effectiveness of this drug has not been proved and some web sites suggest that this drug not be used for liver inflammation.