<sod >On Friday, pharmaceutical giant Pfizer announced that it would not longer permit its products to be used in lethal injections - a move that shut off the final remaining source of approved chemicals.< eod>< sod > On Friday Morning, pharmaceutical giant Pfizer announced that it would not longer permit its products to be used in lethal injections - a move that shuts off the final remaining source of approved chemicals for state executions, several affected.< eod>