Maintenance of Efficacy.

Inclusion Criteria: * Subjects must meet the American College of Rheumatology (ACR) criteria for fibromyalgia * Pain score greater than or equal to 4 on an 11-point NRS * FIQ-Total score greater than or equal to 45 points Exclusion Criteria: * Other severe pain that may confound assessment or self evaluation of the pain associated with fibromyalgia * Any autoimmune rheumatic disorder, non-focal rheumatic disease (other than fibromyalgia), clinically significant active infection, or untreated endocrine disorder * Uncontrolled hypertension Pending Worker's Compensation; Current or recent diagnosis or episode of major depressive disorder, dysthymia and/or uncontrolled depression; Subjects to be at risk of suicide;