title: Placebo versus allopurinol for renal calculi.
abstract: Certain patients with recurrent calcium oxalate calculi will show a mild uricacidemia and/or uricosuria. A prospective blind study was begun in 1970, comparing placebo to allopurinol in the management of these patients. The 92 patients had been followed for a minimum of 6 months to 5 years before the code was broken. It is demonstrated clearly that there is a placebo effect in the management of renal calculous disease. It also has been shown that the only event that clearly separates the 2 groups is complete cessation of calculous formation. Allopurinol is effective in 61 per cent of the patients and these successes usually can be identified after 1 year of treatment.
mesh_terms: D000493:Allopurinol / Q000627:therapeutic use*; D004341:Drug Evaluation; D006801:Humans; D007669:Kidney Calculi / Q000188:drug therapy*; D010919:Placebos
chemical_list: D010919:Placebos; D000493:Allopurinol