Of use in Helminthiasis. Its alkaloid, arecolinum hydrobromatumArecin-br contracts the pupil, acting more promptly and energetically but of shorter duration than EserinumEsin. Serviceable in glaucoma. Acts also as a salivatory like Pilocarpinum (purum)Piloc. Also increases the amplitude of pulsations of the heart and promotes the contractility of the intestines.