Methacholine wani magani ne da ake amfani da shi a gwaje-gwajen likita don tantance amsawar hanyoyin iska a cikin huhu. Yana aiki a matsayin agonist cholinergic, ma'ana yana motsa ayyukan neurotransmitter acetylcholine, wanda hakan yana haifar da raguwar tsoka mai santsi a cikin hanyoyin iska. Ana amfani da Methacholine wajen gano yanayi irin su asma da rashin amsawar buroshi.
