An object of the present invention is to formulate cashew nut shell liquid into a coated formulation which is easy to handle. Another object of the present invention is to prevent irritations caused by the cashew nut shell liquid. Still another object of the present invention is to provide a preparation which is suitable for release of the cashew nut shell liquid in the rumen. To solve the problems, provided is a coated formulation, which is produced by adsorbing cashew nut shell liquid, anacardic acid, or cardanol to an oil adsorbent, granulating the resultant product, and by coating the particle surfaces with a hardened oil or a coating agent.
