Phentermine (Adipex-P, Suprenza) is an amphetamine-like prescription medication used to suppress appetite. It can help weight loss by decreasing your hunger or making you feel full longer. Phentermine is also available in a combination medication for weight loss (Qsymia).
Like other prescription weight-loss drugs, phentermine is intended to be used as part of an overall weight-loss plan. It is indicated for people who are obese, and who have failed to lose enough weight with diet and exercise alone — not for people who want to lose just a few pounds
Phentermine is a Schedule IV drug, a classification given to drugs that have a potential for abuse, although the actual potential appears to be low.
Although phentermine is one of the most commonly prescribed weight-loss medications, it has some potentially serious drawbacks. Common side effects include:
- Increased blood pressure
- Dry mouth
Phentermine isn't a good option if you have heart disease, high blood pressure, an overactive thyroid gland or glaucoma. It also isn't for women who are pregnant, may become pregnant or are breast-feeding.
Feb. 25, 2015
See more Expert Answers
- Anorexiants. Facts & Comparisons. http://online.factsandcomparisons.com/index.aspx. Accessed Jan. 28, 2015.
- Bray GA. Obesity in adults: Drug therapy. http://www.uptodate.com/home/. Accessed Jan. 28, 2015.
- Phentermine. Micromedex 2.0 Healthcare Series. http://www.micromedexsolutions.com. Accessed Jan. 28, 2015.
- Apovian CM, et al. Guidelines on pharmacological management of obesity: An Endocrine Society Clinical Practice Guideline. Journal of Clinical Endocrinology and Metabolism. In press. Accessed Jan. 23, 2015.
- Qysmia (prescribing information). Mountain View, Calif.: Vivus; 2014. http://www.qsymia.com/pdf/prescribing-information.pdf. Accessed Jan. 28, 2015.