CYP 2D6- inhibitorerne fluoxetin og paroxetin øger plasmakoncentrationen af risperidon, men niveauet af den aktive antipsykotiske fraktion øges ikke i tilsvarende grad.
The CHMP assessed the need for a warning, advising against the use of Risperdal Consta in acute exacerbations of schizophrenia, but considered it to potentially raise a safety concern that is not valid or clinically justified and that there are no particular risks associated with using Risperdal Consta in acute exacerbations of schizophrenia that warrant a warning.