title: Prophylactic propranolol in the treatment of headache.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006261:Headache / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000517:prevention & control; D011433:Propranolol / Q000627:therapeutic use*; D011897:Random Allocation
chemical_list: D011433:Propranolol