Phentermine

Drug Usage Statistics, United States, 2006 - 2016

Number of Prescriptions Over Time (2006 - 2016)

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
2006 297  44
2007 259  38
2008 288  29
2009 244  44
2010 241  3
2011 244  3
Year Rank Change
2012 270  26
2013 265  5
2014 170  95
2015 195  25
2016 226  31

Patient Out-Of-Pocket Cost Over Time (2006 - 2016)

"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 (2016)
Phentermine (this drug) 2,295,160

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
  • Adipex-p
  • Fastin
  • Lomaira
  • Obestin-30
  • Oby-trim
  • Ona-mast
  • Suprenza
  • Tora
  • Wilpo
Generic Drug Synonyms and Salts
  • Phentermine Hydrochloride
  • Phentermine

FDA Approval Information

Established Pharmacologic Class (EPC): Sympathomimetic Amine Anorectic
Initial FDA approval date: Prior to January 1, 1982
First FDA applicant: Discn
First dosage form: Capsule (oral)

Prescription data source: Medical Expenditure Panel Survey (MEPS) 2006-2016. Agency for Healthcare Research and Quality (AHRQ), Rockville, MD. ClinCalc DrugStats Database version 19.0. Read more about the ClinCalc DrugStats database.

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Updated Jul 19, 2018
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