The embodiments provide a percutaneous absorption composition for a basic medicament having improved transdermal absorbability. The percutaneous absorption composition comprises a sorbic acid and/or a metal sorbate as a percutaneous absorption promoter. The molar ration of the sorbic acid and/or the metal sorbate to the basic medicament is 0.5-2.5. The composition of the present disclosure may further comprise a basic component.
