Extracorporeal shockwave lithtripsy (ESWL) is the method of choice of treating most renal and ureteric stones. The electrohydraulic generated shockwave litholriptors, however, tend to produce pain at the shockwave entry site on the skin, and these treatments are usually administered under general anaesthsea. With the acquisition of an electrohydraulic ESWI machine (Econolith - 2000) by the UWI in August 1995, this method of treating stones is now available in Jamaica. Between September and November 1995 data was prospectively collected on all patients treated by ESWL. There were 20 patients in all undergoing 22 treatment sessions with 2 repeats. There were 11 females and 9 males with ages ranging from 24 to 73 years. A total of 20 renal stones and 2 ureteric were treated. Thirteen patients received Tenoxicam 40 mg IM 20 minutes before the procedure as the only form of analgesia. Of the thirteen patients, only one patient described the procedures as severely painful. Four patients described it as moderately painful and the remaining eight patients described the procedure as producing only mild pain or discomfort. There were no complications apart from bruising of the skin at the shockwave entry site of eight patients. There was fluoroscopic evidence of fragmentation of all stones during treatment. Patients receiving Tenoxicam 40 mg IM we able to be discharge a from hospital immediately after the treatment. In conclusion, from our preliminary experience thus far, electrohydraulic ESWL can be safely and humanely administered with good effect using 40 mg of Tenoxicam administered intra muscularly, thus obviating the need for general or regional anaesthesia with its attendant morbidity and mortality (AU)