title: Letter: Local anesthetics.
mesh_terms: D000779:Anesthetics, Local / Q000009:adverse effects; D004155:Diphenhydramine / Q000008:administration & dosage*; D004342:Drug Hypersensitivity / Q000517:prevention & control*; D011343:Procaine / Q000009:adverse effects; D014309:Tripelennamine / Q000008:administration & dosage*
chemical_list: D000779:Anesthetics, Local; D014309:Tripelennamine; D011343:Procaine; D004155:Diphenhydramine