IL-1β INHIBITOR

Provided are an IL-1β inhibitor, and a medicine, a pharmaceutical composition and a method each for treating a disease associated with IL-1β, and others, in each of which a low-molecular-weight compound is used as an active ingredient. The present invention relates to an IL-1β inhibitor containing 6-fluoro-3-[(1E)-2-(3-pyridinyl)ethenyl]-1H-indole as an active ingredient.