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Definitions of d Methorphan

  1.   The d isomer of the codeine analog of LEVORPHANOL Dextromethorphan shows high affinity binding to several regions of the brain including the medullary cough center This compound is a NMDA receptor antagonist RECEPTORS N METHYL D ASPARTATE and acts as a non competitive channel blocker It is used widely as an antitussive agent and is also used to study the involvement of glutamate receptors in neurotoxicity