PROBLEM TO BE SOLVED: To provide a TRPA1 activator that activates TRPA1 and is useful for prevention or improvement of ileus and constipation, an agent for preventing or improving ileus, and an agent for preventing or improving constipation.;SOLUTION: A TRPA1 activator contains at least one selected from rosmarinic acid, dimethyl rosmarinic acid and a salt or solvate thereof as an active ingredient.;SELECTED DRAWING: None;COPYRIGHT: (C)2019,JPO&INPIT
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