Transdermal/High Absorption - Reaching deep in gum tissues, muscles and joints. Affinity for white blood cells which makes it a more targeted and effective anti-inflammatory. Additionally, TDC™ is transdermal which gives it the ability to effecEvely be absorbed and work locally. Extremely palatable, since it is derived from beef tallow. Pets see it as a treat...even cats. Directions for use: Dual Action Periodontal and Joint Support: apply on upper gums. Joint Health only: feed just like a treat. To be used for: Pre Post Surgery Care Gingivitis Stomatitis Gum Inflammation Hip & Joint Health Osteoa 1-TDC TetraDecanol Complex (Formerly TDC) Periodontal and Joint Health for Dogs and Cats 120 Count Soft Gels.