title: Letter: Enteric-coated methenamine.
mesh_terms: D006801:Humans; D008709:Methenamine / Q000009:adverse effects*; D011017:Pneumonia, Lipid / Q000139:chemically induced; D013608:Tablets, Enteric-Coated / Q000009:adverse effects
chemical_list: D013608:Tablets, Enteric-Coated; D008709:Methenamine