The object of the present invention is to provide a solid pharmaceutical composition in which both the pre-bitter taste and the post-bitter taste of 1-(3-(2-(1-benzothiophen-5-yl)ethoxy)propyl)azetidin-3-ol or a salt thereof are suppressed. The present invention provides a solid pharmaceutical composition comprising 1-(3-(2-(1-benzothiophen-5-yl)ethoxy)propyl)azetidin-3-ol or a salt thereof and a compound having at least one hydrocarbon group having 8 to 18 carbon atoms and a sulfo group or a salt thereof.
