THE ANALGESIC ACTION OF NORMORPHINE ADMINISTERED INTRACISTERNALLY TO MICE

Abstract
The analgesic action of normorphine developed more rapidly than that of morphine and was, weight for weight, as great as that of morphine, and was as effectively antagonised by N-allylnormorphine when these drugs were administered intracisternally to mice. By this route, more than one molecule of N-allymonnoirphine was required to antagonise the action of one molecule of analgesic drug.

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