In oral carcinogenicity studies of risperidone in rats and mice, increases in pituitary gland adenomas (mouse), endocrine pancreas adenomas (rat), and mammary gland adenomas (both species) were seen.
I karcinogenicitetsforsøg med peroral risperidon til rotter og mus blev der set en stigning i hypofyseadenomer (mus), endokrine pankreasadenomer (rotter) og mammakirteladenomer (begge arter).