NSAIDs Stent Study

Inclusion Criteria: * Over 18 years of age and willing and able to provide informed consent * Patients with renal urolithiasis planning to undergo ureteral stent placement following ureteroscopic manipulation Exclusion Criteria: * Patients requiring a bilateral stone procedure. * Patients on a chronic non-steroidal anti-inflammatory drugs (NSAIDs) including Aspirin defined as any NSAIDs use for more than fifteen days within thirty days prior to the procedure. Exception: use of daily Aspirin 81 mg is allowed. * Patients on any steroid therapy. * Patients with prescription anti-inflammatory drugs. * Patients with gastrointestinal ulcers. * Patients with ureteral obstruction or stricture unrelated to stone disease. * Patients with active urinary tract infection as evidence of untreated positive urine culture obtained prior to the procedure (as part of pre-operative testing). * Patients with preexisting indwelling ureteral stent * Patients who are pregnant or lactating. * Patients with renal or liver impairment. * Patients with concurrent disease, infection, or co-morbidity that, in the judgment of the investigator, would render the patient inappropriate for enrollment.