Natural Factors Celadrin Pain Relief Contains a Proprietary Blend of Esterified Fatty Acid Carbons for Fast-acting Relief From Joint Pain Due to Osteoarthritis. Celadrin is Considered a “cellular Lubricant” Clinically Supported for Joint Health and Function, Including Flexibility and Movement. The Easy-to-Swallow Softgels Are Absorbed Quickly and Contain a Higher Proportion of Cetylated Fatty Acid (Cfa) Esters Than Standard Hard Tablet Forms – So You Can Stay Active!