Cinchoninum Sulphuricum. Sulphate of Cinchonine. (C19H22N2O) H2SO4.   Clinical.-Amblyopia. Constipation. Diarrhoea. Epistaxis. Fever. Hair falling off. Headache. Heartburn. Sexual excitement. Spinal irritation. Urinary disorders. Veins distended.   Characteristics.-Cinchon. sul. has