Subsequent oral administration of radiolabeled zafirlukast to volunteers, urinary excretion accounts for about ten% with the dose and the rest is excreted in feces. Zafirlukast will not be detected in urine. Don't share zafirlukast with other people, even though they've got a similar issue while you. It might harm them. https://lyndonr099grc2.wikigdia.com/user