A method for treating a patient suffering from kidney and/or urinary system stones including preparing an infusion from a plant, such as, large or medium sized fully-grown Piper hispidum leaves, and ingesting a specified amount of the infusion over a predetermined period of time, has proven effective in quickly and painlessly dissolving kidney and/or urinary system stones in the patient. This is a major breakthrough in the field of medical healthcare, eliminating the need for expensive and painful surgery, or other invasive medical procedures, such as, laser treatment(s) or shock wave lithotripsy, which are typically followed by a relatively long recuperative period. By comparison, treatment with an infusion is quick, generally about two to three days, without sophisticated and expensive medical equipment, and without any recuperative period. Furthermore, ingestion of a specified amount of the infusion over a predetermined period of time effectively dissolves kidney and/or urinary system stones allowing the patient to painlessly void the stones in solution with the urine.