title: Letter: Paradoxical response to propranolol in migraine.
mesh_terms: D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000188:drug therapy*; D011433:Propranolol / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D011433:Propranolol