Hello Thanks for query . You have been detected to have stone of a size of 5-6 mm in your kidney and your family physician has advised you to get endoscopic surgery done to fragment /remove the stone . Normally endoscopic surgery for stone is advised only in a situation when patient has severe pain ,vomiting ,and repeated episodes of pain over a short period and ultrasound scan reveals gross hydronephrosis due to obstruction due to stone to flow of urine from kidney into bladder . For a stone of a size of 5-6 mm one can certainly expect it pass down spontaneously with following measures 1) Drink more water to produce more urine that will help to flush out the stone 2) Antibiotics 3) Tomsulosin and Dataverine twice daily which help to dilate the ureter and thereby help to pass out the stone . Please note that there is no medicine that can desolve the stone . Dr.Patil.