title: Efficacy, side effects and tolerance compared during headache treatment with three different calcium blockers.
mesh_terms: D000328:Adult; D002121:Calcium Channel Blockers / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000627:therapeutic use; D009553:Nimodipine / Q000627:therapeutic use; D014653:Vascular Headaches / Q000188:drug therapy*; D014700:Verapamil / Q000627:therapeutic use
chemical_list: D002121:Calcium Channel Blockers; D009553:Nimodipine; D014700:Verapamil; D009543:Nifedipine