Amisulpride and symptomatic bradycardia: a case report.

OBJECTIVE: Amisulpride is a second-generation antipsychotic agent indicated for the treatment of schizophrenia and other major psychotic illnesses. Amisulpride-induced bradycardia is a rare condition of unknown etiology and mechanism. Asymptomatic bradycardia has been associated with amisulpride in only two cases. In our case, the association was rated as "probable" on the Naranjo adverse drug reaction probability scale. METHOD: Case report. RESULTS: A 45-year-old male patient developed symptomatic bradycardia during usage of amisulpride (400-800 mg/day), which dramatically improved after the complete termination of amisulpride usage. The psychiatric condition remained relatively stable without bradycardia after administration of another antipsychotic agent [risperidone (3 mg/day)]. CONCLUSION: This is the first case report of symptomatic bradycardia associated with the use of amisulpride. Although bradycardia is a rare adverse reaction to antipsychotics, this finding may alert psychiatrists and physicians to this antipsychotic drug side effect. Further study is needed to disclose the role of antipsychotics in bringing about symptomatic bradycardia.