Drug Usage Statistics, United States, 2004 - 2014

Number of Prescriptions Over Time (2004 - 2014)

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 417 -
2005 413  4
2006 302  111
2007 322  20
2008 319  3
2009 309  10
Year Rank Change
2010 350  41
2011 289  61
2012 268  21
2013 278  10
2014 249  29

Patient Out-Of-Pocket Cost Over Time (2004 - 2014)

"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 Name Total Prescriptions (2014)
Mesalamine 3,530,952
Sulfasalazine (this drug) 2,239,532

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
  • Azulfidine
  • Azulfidine EN-tabs
  • S.A.S.-500
Generic Drug Synonyms and Salts
  • Sulfasalazine

FDA Approval Information

Established Pharmacologic Class (EPC): Aminosalicylate
Initial FDA approval date: Prior to January 1, 1982
First FDA applicant: Pharmacia And Upjohn Co
First dosage form: Tablet (oral)

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2004-2014. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 17.0. Read more about the ClinCalc DrugStats database.


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Updated Mar 4, 2017
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