Usually gall stone disease treatment is Surgical removal of GB (Cholecystectomy) only.
Still if you want Medical management, you can try Tab. Udiliv (300), thrice daily for 1month, but there is no clinical data that claims or provides surety of dissolution of Gall stones.
Next Steps
Consult with a General and Laparoscopic surgeon for better evaluation
Health Tips
Have fat-restricted diet
Plenty of oral fluids