title: Letter: A further look at laxatives.
mesh_terms: D000818:Animals; D002368:Castor Oil / Q000009:adverse effects; D002400:Cathartics / Q000494:pharmacology*; D006801:Humans; D007422:Intestines / Q000187:drug effects* / Q000502:physiology
chemical_list: D002400:Cathartics; D002368:Castor Oil