Johnson & Johnson must face a trial over Arkansas officials’ claims the drugmaker hid the risks of its anti-psychotic drug Risperdal when selling it to residents covered by the state’s Medicaid program, a judge ruled. J&J, the second-biggest maker of health products, will face a March 2012 trial of a lawsuit filed by Arkansas Attorney General Dustin McDaniel over the company’s Risperdal marketing campaign, Circuit Judge Tim Fox in Little Rock said today. Fox rejected the company’s bid to have the state’s case thrown out.