title: Drug metabolism in a geriatric population.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D000983:Antipyrine / Q000378:metabolism*; D006207:Half-Life; D006801:Humans; D010653:Phenylbutazone / Q000378:metabolism*
chemical_list: D010653:Phenylbutazone; D000983:Antipyrine