Trifluoperazine-d 3 (dihydrochloride) is deuterium labeled Trifluoperazine (dihydrochloride). Trifluoperazine dihydrochloride, an antipsychotic agent, acts by blocking central dopamine receptors. Trifluoperazine dihydrochloride is a potent α1-adrenergic receptor antagonist. Trifluoperazine dihydrochloride is a potent NUPR1 inhibitor exerting anticancer activity. Trifluoperazine dihydrochloride is a calmodulin inhibitor, and also inhibits P-glycoprotein. Trifluoperazine dihydrochloride can be used for the research of schizophrenia. Trifluoperazine dihydrochloride acts as a reversible inhibitor of influenza virus morphogenesis.