Uncompetitive N-methyl-D-aspartate Receptor Antagonist

Established Pharmacologic Class (EPC) Comparison, United States, 2018

Total Prescriptions in (2018)

Drug Name	Total Prescriptions (2018)	Percent Share
Brompheniramine Maleate; Dextromethorphan Hydrobromide; Pseudoephedrine Hydrochloride	1,228,853	58.6%
Dextromethorphan Hydrobromide; Promethazine Hydrochloride	867,626	41.4%

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2008-2018. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 21.0. Read more about the ClinCalc DrugStats database.