title: Letter: Myoclonus, methysergide, and serotonin.
mesh_terms: D006916:5-Hydroxytryptophan / Q000009:adverse effects; D000818:Animals; D004295:Dihydroxyphenylalanine / Q000494:pharmacology / Q000627:therapeutic use; D004336:Drug Antagonism; D006168:Guinea Pigs; D006801:Humans; D008784:Methysergide / Q000494:pharmacology* / Q000627:therapeutic use; D009207:Myoclonus / Q000139:chemically induced / Q000188:drug therapy*; D010300:Parkinson Disease / Q000188:drug therapy; D011941:Receptors, Adrenergic / Q000187:drug effects; D012702:Serotonin Antagonists
chemical_list: D011941:Receptors, Adrenergic; D012702:Serotonin Antagonists; D004295:Dihydroxyphenylalanine; D006916:5-Hydroxytryptophan; D008784:Methysergide