From the Manufacturer's Label:
Supports Healthy Joint Function
Supports Elasticity of Joint Tissues**
Chondroitin Sulfate is a glycosaminoglycan and is a normal component of many body tissues, including articular cartilage.** NOW Foods® Chondroitin is high potency and is derived from bovine cartilage.
Manufactured by NOW Foods®.Contains no sugar, salt, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives.