A Phase III Clinical Trial of Duloxetine in Participants With Fibromyalgia

INTERVENTION: investigational material(s) Generic name etc : Duloxetine Hydrochloride INN of investigational material : Therapeutic category code : 119 Other agents affecting central nervous system Dosage and Administration for Investigational material : Oral CONDITION: Fibromyalgia PRIMARY OUTCOME: Change from baseline in Brief Pain Inventory (BPI)‐average pain score INCLUSION CRITERIA: Participants fulfilling the criteria in the American College of Rheumatology 1990 Criteria for the Classification of Fibromyalgia. And et al.