Ziprasidone hydrochloride. Molecular model of the drug ziprasidone hydrochloride (C21.H21.Cl.N4.O.S?H.Cl.?H2.O). This antipsychotic drug is sold under the brand name Geodon. It is used for the treatment of schizophrenia, and acute mania and mixed states associated with bipolar disorder. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue), oxygen (red), chlorine (green) and sulfur (yellow).