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Dextromethorphan does not have a significant affinity for the mu-opioid receptor activity typical of morphinan compounds and exerts its therapeutic effects through several other receptors. [8] In its pure form, dextromethorphan occurs as a white powder. [9] When exceeding approved dosages, dextromethorphan acts as a dissociative hallucinogen.
Since dextromethorphan is an optical isomer of the Schedule II opiate levomethorphan (but does not act like an opiate), an exemption was necessary to keep it an uncontrolled substance. The Federal Analog Act does not apply to dextromethorphan because a new drug application has been filed for it. [citation needed]
Guaifenesin might act as an expectorant by increasing the volume and reducing the viscosity of secretions in the trachea and bronchi via stimulation of the gastric mucosa. . This stimulation leads to an increased parasympathetic activity in the respiratory tract via the so-called gastro-pulmonary reflex, although some in vitro studies suggested that it might also act directly on the ...
Dextromethorphan/bupropion has less activity as an NMDA receptor antagonist than dextromethorphan alone. [11] This is because bupropion is a potent CYP2D6 inhibitor and prevents the bioactivation of dextromethorphan into dextrorphan , a much more potent NMDA receptor antagonist and weaker serotonin reuptake inhibitor than dextromethorphan ...
Ketamine’s antidepressant effects are part of what prompted researchers to explore other drugs that target glutamate—like the venerable cough suppressant dextromethorphan found in Robitussin ...
On Monday, Axsome Therapeutics, Inc. (NASDAQ:AXSM) released data from ACCORD-2, ADVANCE-2, and long-term safety trials AXS-05 (dextromethorphan-bupropion) in Alzheimer's disease agitation. The ...
Dextromethorphan – An over-the-counter cough suppressant, as well as dissociative hallucinogen. Levomethorphan – A potent opioid analgesic that was never clinically developed; a prodrug of the powerful opioid agonist analgesic levorphanol (Levo-Dromoran). Racemethorphan is the racemic mixture of both of these stereoisomers! [2]
Coricidin, Coricidin 'D' (decongestant), or Coricidin HBP (for high blood pressure), is the name of an over-the-counter cough and cold drug containing dextromethorphan (a cough suppressant) and chlorpheniramine maleate (an antihistamine). [1] Introduced by Schering-Plough in 1949 as one of the first antihistamines, it is now owned by Bayer.