Each AKINETON tablet for oral administration contains 2 mg biperiden hydrochloride. Other ingredients may include corn syrup, lactose, magnesium stearate, potato starch and talc. AKINETON (biperiden) is an anticholinergic agent. Biperiden is a5-Norbornen-2-yl-a-phenyl-1-piperidinepropanol. It is a white, crystalline, odorless powder, slightly soluble in water and alcohol. It is stable in air at normal temperatures. Biperiden may be represented by the following structural formula: