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Diabetes Metab Syndr Obes. 2013 Apr 08;6:131-9. doi: 10.2147/DMSO.S43403. Print 2013.

Clinical utility of phentermine/topiramate (Qsymia™) combination for the treatment of obesity.

Diabetes, metabolic syndrome and obesity : targets and therapy

Jin Hee Shin, Kishore M Gadde

Affiliations

  1. Department of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA.

PMID: 23630428 PMCID: PMC3626409 DOI: 10.2147/DMSO.S43403

Abstract

Qsymia™ (Vivus Inc, Mountain View, CA, USA), a combination of phentermine and delayed-release topiramate, has been available in the US since September 2012 for the treatment of obesity. Phentermine is an anorexigenic agent, which is approved for the short-term treatment of obesity, while topiramate is approved for nonweight loss indications - seizure disorders and migraine prophylaxis. The amount of weight loss achieved with combination therapy is of a greater magnitude than what could be achieved with either agent alone. Adverse events that occur with the combination therapy are in line with the known side effect profiles of the constituent drugs; teratogenicity, a slight increase in heart rate, psychiatric and cognitive adverse effects, and metabolic acidosis are concerns.

Keywords: Qsymia; antiobesity drugs; combination drug; obesity; phentermine; topiramate; weight loss

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