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Dextromethorphan, sold under the brand name Robitussin among others, is a cough suppressant used in many cough and cold medicines. [6] In 2022, the US Food and Drug Administration (FDA) approved the combination dextromethorphan/bupropion to serve as a rapid-acting antidepressant in people with major depressive disorder.
Dextromethorphan's effects have been divided into four plateaus. [14] The first plateau (1.5 to 2.5 mg per kg body weight) is described as having euphoria, auditory changes, mild stimulation, and change in perception of gravity. The second plateau (2.5 to 7.5 mg/kg) causes intense euphoria, vivid imagination, and closed-eye hallucinations.
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 ...
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]
dextromethorphan 11%, quinidine 70-80%. Food has no effect on absorption. Metabolism: Liver, extensive. Dextromethorphan is catalyzed by CYP2D6. Quinidine is metabolized by CYP3A4 and competitively inhibits the metabolism of dextromethorphan to increase and prolong plasma concentrations of dextromethorphan: Elimination half-life
The unseasoned bread crumbs were sold at stores throughout the United States from April 10, 2024, through Jan. 22, 2025, said La Fiesta. The seasoned breadcrumbs were sold from Aug. 29, 2024 ...
Dextromethorphan, a cough suppressant; Simple analgesics such as aspirin, paracetamol and ibuprofen in packs containing more than 24 tablets (packs containing up to 24 tablets of simple analgesics are unscheduled, and can be sold in any shop) Hyoscine, used to treat motion sickness, postoperative nausea and vomiting.
Guaifenesin is used to try to help with coughing up thick mucus. It is sometimes combined with the antitussive (cough suppressant) dextromethorphan, such as in Mucinex DM or Robitussin DM. [12] It is also combined with ephedrine in Primatene and Bronkaid tablets for symptomatic relief of asthma.