Memantine

Drug Usage Statistics, United States, 2013 - 2022

Memantine Summary for 2022

Top drug rank	#150 ( 20)
Estimated number of prescriptions in the United States (2022)	3,703,293
Estimated number of patients in the United States (2022)	896,917

Average total drug cost (USD)
Per prescription	$45.02
Per day of therapy	$0.81/day
Average out-of-pocket cost (USD)
Per prescription	$17.13
Per day of therapy	$0.28/day

Total Prescriptions and Patients Per Year (2013 - 2022)

Rank of Top Drugs Over Time

"Rank" refers to the frequency that a given medication is prescribed within a calendar year compared to all other medications. A rank of "4" would indicate that the medication was the fourth most commonly prescribed medication.

Year	Rank	Change
2013	157	30
2014	181	24
2015	173	8
2016	148	25
2017	154	6

Year	Rank	Change
2018	191	37
2019	169	22
2020	152	17
2021	170	18
2022	150	20

Drug Cost Over Time (2013 - 2022)

Cost Per Prescription Fill: Average cost per filled prescription regardless of how many days of therapy the prescription is filled for (e.g. 10 days, 30 days, 90 days, etc.)
Cost per Day of Therapy: The average cost per prescription fill divided by the days of therapy. For example, a 10-day antibiotic course costing $30 would be $3 per day. Similarly, a 30-day supply of an oral antihypetensive costing $30 would be $1 per day.

Total cost: The average total cost of the medication including the out-of-pocket cost (see below) plus the amount paid by other parties (Medicare, Medicaid, private insurance, Veterans Administration, TRICARE, other state/federal sources, Worker's compensation, and other miscellaneous sources)
Out-of-pocket cost: The average payment made by the patient which may include deductibles, coinsurance, copayments, or the cash price paid without insurance coverage.

Cost Per Prescription Fill (USD)

Cost Per Day of Therapy (USD/day)

Distribution of Dispensed Dosage Forms (2022)

Dosage Form	Strength	% of Dispensed Products
Tablet/capsule	10 mg	68.5%
Tablet/capsule	5 mg	21.9%
Other, unspecified, or misc.		9.6%

Distribution of Days Supplied (2022)

"Days supply" is defined as the number of days that a prescription should last. For example, a prescription of 60 tablets that is taken twice daily has a day supply of 30 days.

Related Drugs

Drug Name	Total Prescriptions (2022)
Memantine (this drug)	3,703,294

Therapeutic Classes

Drug Synonyms

Drug synonyms are used during the sanitation and standardization process of "cleaning" the original data source (MEPS). Occassionally, brand names may be listed below that are no longer on the market or are very infrequently used.

Brand Name Synonyms

Namenda
Namenda XR

Generic Drug Synonyms and Salts

Memantine Hydrochloride
Memantine

FDA Approval Information

Established Pharmacologic Class (EPC):	N-methyl-D-aspartate Receptor Antagonist
Initial FDA approval date:	10/16/2003
First FDA applicant:	Rx
First dosage form:	Tablet (oral)

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2013-2022. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 2024.08. 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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