It is an object of the present invention to provide an excellent anti-inflammatory drug for external use that is used for treating inflammation observed in animals (myositis, arthritis, neuritis, tendinitis, tenosynovitis, desmitis, bruise, sprain, etc.), and in particular, for the treatment of bowed tendon observed in horses. The solution of the present invention is an external pharmaceutical composition for preventing or treating inflammation observed in animals, which comprises loxoprofen or a salt thereof as an active ingredient.
