The present invention provides an optimized and/or enriched hydrolyzable tannoid blend derived from Terminalia chebula. In an embodiment the present invention further relates to the use of an extract of Terminalia chebula for treatment of osteoarthritis. In another embodiment, a T. chebula extract composition contains about 8-25% by weight chebulagic acid, about 15-30% by weight chebulinic acid and about 10-40% by weight other low molecular weight hydrolyzable tannoids. This embodiment provides a T. chebula enriched tannoid blend composition (TC/enriched tannoid blend). In another embodiment, a method of treating osteoarthritis in an individual is provided, comprising administering to the individual in need thereof a therapeutically effective amount of the T. chebula extract composition. In yet another embodiment, a method of reducing pain and inflammation in an individual afflicted with osteoarthritis is provided, comprising orally administering to the individual in need thereof a therapeutically effective amount of the T. chebula extract composition.