The Efficacy and Safety of Pregabalin Release Tablets for the Treatment of Fibromyalgia

Inclusion Criteria: * Patients who met the 1990 American College of Rheumatology (ACR) criteria for fibromyalgia (ie, widespread pain present for at least 3 months, and pain in at least 11 of 18 specific tender point sites). Patients who completed at least 4 pain diaries within the last 7 days and the average pain score must have been ≥4, and had a score of ≥40 mm on the Visual Analogue Scale (VAS) at screening and randomization . Exclusion Criteria: * Patients with other severe pain that may confound assessment or self-evaluation of the pain associated with fibromyalgia. Patients with any inflammatory muscle or rheumatologic disease other than fibromyalgia, active infections, or untreated endocrine disorders.