Anti-epileptic Agent

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

Total Prescriptions in (2018)

Drug Name Total Prescriptions (2018) Percent Share
Gabapentin 45,586,654 65.6%
Lamotrigine 11,582,775 16.7%
Divalproex Sodium 5,275,298 7.6%
Oxcarbazepine 3,915,509 5.6%
Phenytoin 1,643,498 2.4%
Primidone 1,437,305 2.1%

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2008-2018. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 21.2. 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 Jan 18, 2021
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