Uncompetitive N-methyl-D-aspartate Receptor Antagonist

Established Pharmacologic Class (EPC) Comparison, United States, 2020

Total Prescriptions in (2020)

Drug Name Total Prescriptions (2020) Percent Share
Dextromethorphan; Guaifenesin 703,036 33.9%
Dextromethorphan; Promethazine 654,636 31.5%
Brompheniramine; Dextromethorphan; Pseudoephedrine 556,973 26.8%
Dextromethorphan 71,074 3.4%
Brompheniramine; Dextromethorphan; Phenylephrine 40,347 1.9%
Dextromethorphan; Guaifenesin; Phenylephrine 27,302 1.3%
Dexchlorpheniramine; Dextromethorphan; Phenylephrine 22,897 1.1%

Total Prescriptions by Drug Over Time

Drug Class Prescribing Trends Over Time

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2013-2020. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 2022.08. Read more about the ClinCalc DrugStats database.

All ClinCalc DrugStats figures and graphs on this page are licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0).


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Updated Sep 12, 2021
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