Ma'anar ƙamus na "gishiri mai ɗaci" yana nufin wani fili na magani wanda ake amfani dashi azaman purgative ko laxative. Gishiri mai ɗaci yawanci ana yin su ne daga magnesium sulfate kuma suna da ɗanɗano mai ɗaci, saboda haka sunan. Ana kuma san su da Epsom salts, wanda shine sunan kasuwanci don magnesium sulfate. Ana amfani da gishiri mai ɗaci don magance maƙarƙashiya ko don wanke hanji kafin aikin likita.