Drug Usage Statistics, United States, 2008 - 2018

Warfarin Summary for 2018

Estimated number of prescriptions in the United States 14,772,355
Top drug rank #52 ( 1)
Average total drug cost $28.31 (USD)
Average out-of-pocket cost $7.19 (USD)

Number of Prescriptions Over Time (2008 - 2018)

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
2008 21  3
2009 17  4
2010 14  3
2011 17  3
2012 26  9
2013 35  9
Year Rank Change
2014 35 0
2015 42  7
2016 41  1
2017 51  10
2018 52  1

Drug Cost Over Time (2008 - 2018)

  • 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.

Related Drugs

Drug Name Total Prescriptions (2018)
Warfarin (this drug) 14,772,356

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
  • Athrombin
  • Coumadin
  • Jantoven
  • Panwarfin
  • Athrombin-k
Generic Drug Synonyms and Salts
  • Warfarin Potassium
  • Warfarin Sodium
  • Warfarin

FDA Approval Information

Established Pharmacologic Class (EPC): Vitamin K Antagonist
Initial FDA approval date: Prior to January 1, 1982
First FDA applicant: Discn
First dosage form: Tablet (oral)

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2008-2018. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 21.1. 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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