title: [Magnesium is no longer effective: calf cramps are becoming more severe].
authors.forename: A
authors.initials: A
authors.lastname: Rolfes-Bussmann
authors.forename: J C
authors.initials: JC
authors.lastname: Frölich
mesh_terms: D000628:Aminophylline / Q000008:administration & dosage; D003937:Diagnosis, Differential; D004305:Dose-Response Relationship, Drug; D004338:Drug Combinations; D006801:Humans; D008274:Magnesium / Q000008:administration & dosage*; D009120:Muscle Cramp / Q000188:drug therapy* / Q000209:etiology; D011803:Quinine / Q000008:administration & dosage; D017211:Treatment Failure
chemical_list: D004338:Drug Combinations; D000628:Aminophylline; C025678:Limptar; D011803:Quinine; D008274:Magnesium