Provided is an oral composition having an excellent anti-inflammatory effect and excellent formulation stability. The oral composition contains a component (A) that is one or more lactam compounds selected from the group consisting of pyrrolidone carboxylic acid, 6-oxo-2-piperidinecarboxylic acid, 3-(2-oxo-1-azepanyl)propanoic acid and salts thereof and a component (B) that is an anti-inflammatory agent.