in a controlled trial of amitriptyline hydrochloride in migraine prophylaxis , 100 patients received placebo for a four-week baseline period and then were randomized in double-blind fashion to therapy with amitriptyline ( 47 subjects ) or placebo ( 53 subjects ) for another four to eight weeks .
C0700523
amitriptyline hydrochloride
C0002600
amitriptyline