Drug Usage Statistics, United States, 2005 - 2015

Number of Prescriptions Over Time (2005 - 2015)

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
2004 204 -
2005 236  32
2006 283  47
2007 281  2
2008 200  81
2009 221  21
Year Rank Change
2010 220  1
2011 172  48
2012 156  16
2013 136  20
2014 100  36
2015 108  8

Patient Out-Of-Pocket Cost Over Time (2005 - 2015)

"Out-of-pocket" cost refers to the payment made by the patient (either cash price or the copay amount). This value does not include reimbursement from a third party payer (eg, Medicare or private insurance) and does not represent the total drug cost.

Usage Statistics of Related Drugs

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
  • Zanaflex
Generic Drug Synonyms and Salts
  • Tizanidine Hydrochloride
  • Tizanidine

FDA Approval Information

Established Pharmacologic Class (EPC): N/A
Initial FDA approval date: 11/27/1996
First FDA applicant: Rx
First dosage form: Tablet (oral)

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2005-2015. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 18.0. Read more about the ClinCalc DrugStats database.


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Updated Mar 4, 2017
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