Could The Elevation In Liver Enzymes Be Due To Sazo?

i am diagnosed Ankylosing Spondylitis since 2007. After 3 years of homeopathy treatment i switched to a rheumatologist who prescribed me sazo(sulphasalazine) 1000 mg twice daily and my pain gone. i stopped pain killer even last 3 months i have not taken single one. but after blood test my sgpt sgot increased (double). other tests are normal i.e. bilurubin, urea, creatinine,hb, est etc. doctors given me udiliv 150 mg thrice daily. as advised i have to blood test after one month. if sgpt sgot shows high level i may stop sazo. but doctors told me i have to decided whether i should stop sazo? what should i do ? please advice