If you have stopped alcohol,then there may be other issues which are responsible for your high SGPT levels.
These issues could be
Obesity and high fatty diet resulting in fatty liver
Lack of exercises.
Chronic abuse of various medicines like anti biotics or anti inflammatory medicines.
By the way there us no medicine to cure your high levels of SGPT.
just change your lifestyle by avoiding alcohol,fatty and junk food and colas,doing daily exercises and consuming fresh fruits and green vegetables.
See to it that you don't have diabetes
as tnis may also result in fatty liver which ultimately results in high SGPT.