Kalmar "anticholinesterase" tana nufin wani abu da ke hana ayyukan enzyme acetylcholinesterase, wanda ke da alhakin rushewar neurotransmitter acetylcholine. Ta hanyar hana acetylcholinesterase, abubuwan anticholinesterase suna haɓaka matakan acetylcholine a cikin jiki, yana haifar da ƙara yawan aiki na tsarin cholinergic. wasu nau'ikan glaucoma. Hakanan ana iya amfani da su azaman maganin kwari, tunda kwari sun dogara da acetylcholine don aikin tsarin jijiya.