phen·​ter·​mine | \ ˈfen-tər-ˌmēn How to pronounce phentermine (audio) \

Definition of phentermine

: an anorectic drug C10H15N used in the form of its hydrochloride to treat obesity

Examples of phentermine in a Sentence

Recent Examples on the Web During three of those years, Ramírez allegedly prescribed the man 600 tablets of the sedative Ambien, 940 pills of the narcotic Norco and 660 phentermine tablets. Matthias Gafni, San Francisco Chronicle, "He treats Oakland's vulnerable. Now, his future is on the line," 21 May 2020 Many stimulants are specifically marketed as antiobesity drugs, including phentermine and lisdexamfetamine dimesylate (Vyvanse), which earlier this year became the first drug approved for the treatment of binge-eating disorder. Andrea Alfano, Scientific American, "Many Psychiatric Drugs Have Serious Effects on Body Weight," 1 July 2015 Weight loss drugs approved for long-term use include orlistat (brand name Xenical), lorcaserin (Belviq) and liraglutide (Saxenda) as well as the combination drugs naltrexone-bupropion (Contrave) and phentermine-topiramate (Qsymia). Jacqueline Howard, CNN, "Weight loss drug Belviq tied to 'possible increased risk of cancer,' FDA says," 15 Jan. 2020 She was found in possession of phentermine in a prescription bottle that did not belong to her, police reported. Jennifer James, Houston Chronicle, "Police: 2 Friendswood men suspected in vehicle burglaries," 21 Aug. 2019 Ethanol is alcohol, and phentermine is a diet medication. Tom Steele, Dallas News, "Missy Shorey, first woman elected to lead Dallas County GOP, died from accidental mix of alcohol, sleeping aids," 2 Aug. 2019 Take, for example, the diet drugs fenfluramine and dexfenfluramine (when combined with phentermine they were commonly known as fen-phen). Neile Grayson, STAT, "Real-world data can help make better drugs and do it faster," 2 May 2018 In 1997, a combo drug containing fenfluramine and phentermine, or fen-phen, was pulled off the market after reports of heart valve damage and deaths. Bradley J. Fikes,, "Orexigen, seller of weight-loss drug Contrave, agrees to sale for $75 million," 23 Apr. 2018 The main active ingredient is phentermine, which was not the cause of her death. Rene Rodriguez, miamiherald, "A popular real estate exec died suddenly at home. Detectives think it could be homicide. | Miami Herald," 27 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phentermine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of phentermine

1961, in the meaning defined above

History and Etymology for phentermine

probably from phenyl + tert- (from tertiary) + amine

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The first known use of phentermine was in 1961

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Cite this Entry

“Phentermine.” Dictionary, Merriam-Webster, Accessed 12 May. 2021.

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phen·​ter·​mine | \ ˈfen-tər-ˌmēn How to pronounce phentermine (audio) \

Medical Definition of phentermine

: an anorectic drug administered in the form of its hydrochloride C10H15N·HCl to treat obesity

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