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 487 -
2005 556  69
2006 386  170
2007 702  316
2008 592  110
2009 503  89
Year Rank Change
2010 82  421
2011 81  1
2012 67  14
2013 72  5
2014 54  18

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)
Amphetamine (this drug) 15,905,052
Methylphenidate 15,505,256
Lisdexamfetamine Dimesylate 8,394,655
Dexmethylphenidate Hydrochloride 3,194,850

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
  • Adzenys XR-odt
  • Dyanavel XR
  • Evekeo
Generic Drug Synonyms and Salts
  • Amphetamine Sulfate
  • Amphetamine

FDA Approval Information

Established Pharmacologic Class (EPC): Central Nervous System Stimulant
Initial FDA approval date: 8/31/1984
First FDA applicant: Lannett Co Inc
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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Which of these drugs causes acute kidney injury? The Top 250 Drugs by ClinCalc Academy
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Updated Mar 4, 2017
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