Dietary supplement. Bio align. Soothes muscles & joints. Source Naturals Fibro-Response is a comprehensive formula that soothes muscles and joints by supporting oxygen supply and energy production. Without adequate energy and oxygen, muscles become fatigued, achy, and painful. Fibro-Response also provides powerful antioxidants for healthy joints and connective tissue, and supports liver function and circulation. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease).