Close up image of a caretaker helping older woman walk

Government prosecutors rejected a proposed settlement worth roughly $1 billion with pharmaceutical giant Johnson & Johnson over questionable marketing tactics for the antipsychotic Risperdal.

Department of Justice prosecutors, who were tasked with approving a settlement brokered by federal prosecutors in Philadelphia, rejected the settlement because it was not large enough, the Wall Street Journal reported.

The antipsychotic medication is often prescribed off-label to treat aggressive behaviors of elderly nursing home residents with dementia.

J & J has been under investigation in several states for paying kickbacks to state Medicaid officials and conducting misleading marketing campaigns over Risperdal.

The department also is seeking a settlement $1.4 billion from Eli Lilly over its antipsychotic Zyprexa, the newspaper reported.