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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