Janssen Pharmaceuticals, manufacturer of a drug widely used in autistic children, omitted data on its side effects from a 2003 study, according to evidence presented during a lawsuit against the company.
Risperidone, marketed by Janssen as Risperdal, is one of only two drugs approved for autism. It was developed as an antipsychotic for adults with schizophrenia in 1993. Initially, it was not deemed safe for prepubescent children because it can boost levels of prolactin. Elevated prolactin levels are linked to a range of side effects, including gynecomastia in men and boys.