A US judge slashed from $8 billion to $6.8 million the punitive damages award against Johnson & Johnson to a man who claimed it failed to warn boys that using its antipsychotic drug Risperdal could grow breasts. The 26-year-old was prescribed Risperdal in 2003 for autism-related symptoms. The pharma giant earlier said it faced lawsuits by 13,600 people over Risperdal.