Efficacy of Tart Cherry Juice to Reduce Pain and Inflammation Among Patients With Inflammatory Osteoarthritis

Inclusion Criteria: * Diagnosed with inflammatory osteoarthritis * In good general health * Stable pattern of anti-inflammatory or pain relieving drug use for 3 months prior to study * Ability and willingness to maintain consistent pattern of anti-inflammatory or pain relieving drug use during the course of the study, and to not seek any other treatment during the study * Ability and willingness to consume juice or placebo drink for 21 consecutive days, and to participate in screening measures, including a blood draw, before and after the intervention period Exclusion Criteria: * Pregnancy * Serious medical conditions such as recent heart attack or stroke, cancer, diabetes (type 1 and type 2), or gastrointestinal ulcers * Individuals who have not been on a stable dose of pain medications or pain modalities for at least 3 months, including muscle relaxants, tender point anesthetic injections, systemic or intrabursal or intraarticular steroids, or any investigational drug/device in the prior 90 days * Individuals who have used nonpharmacologic pain therapies including acupuncture, ultrasound, or transcutaneous electrical nerve stimulation within the past 30 days