Eli Lilly has revealed that a clinical trial involving some 200 volunteers has demonstrated the effectiveness of its experimental therapy against schizophrenia. The therapy is being heralded as a potential breakthrough in the field which would steer clear of many of the harsh side effects associated with existing schizophrenia drugs. Researchers also caution, though, that work on LY2140023 is still at an early stage. Nevertheless, analysts were awed by the potential of a new lead therapy in the field. Schizophrenia drugs took in $12 billion in the U.S. last year--$18 billion worldwide.