title: How much isoniazid is needed for prophylaxis?
mesh_terms: D000293:Adolescent; D000413:Alaska; D002648:Child; D002986:Clinical Trials as Topic; D005500:Follow-Up Studies; D006801:Humans; D007538:Isoniazid / Q000008:administration & dosage*; D010919:Placebos; D014376:Tuberculosis / Q000453:epidemiology / Q000517:prevention & control*
chemical_list: D010919:Placebos; D007538:Isoniazid