title: Ketamine contains benzethonium.
authors.forename: R E
authors.initials: RE
authors.lastname: Johnstone
authors.forename: D J
authors.initials: DJ
authors.lastname: Smith
mesh_terms: D001558:Benzethonium; D007649:Ketamine; D011310:Preservatives, Pharmaceutical
chemical_list: D011310:Preservatives, Pharmaceutical; D001558:Benzethonium; D007649:Ketamine