Phentermine is primarily used as a short-term aid for weight loss in individuals who are obese or overweight, especially those with additional health risks such as high blood pressure, diabetes, or high cholesterol[2][4][5]. It is prescribed alongside diet, exercise, and behavioral changes, typically for people who have not succeeded in losing enough weight through lifestyle modifications alone[7].
Phentermine belongs to a class of medications called anorectics, which work by decreasing appetite. It may also help patients feel full longer after eating[6][7][3]. Commonly, it is taken for a limited period, generally up to 12 weeks, though in some cases, health care providers may prescribe it for longer[6][7].
It is sometimes prescribed in combination with topiramate (as in the drug Qsymia) for long-term management of obesity and related conditions, in patients with a body mass index (BMI) above 30 kg/m² or above 27 kg/m² with other health complications[1][3][4].
Phentermine should only be used under medical supervision due to potential side effects (like fast heartbeat, high blood pressure, restlessness, and rarely, serious issues such as heart valve problems) and its classification as a controlled substance, which means it can be misused or lead to dependence[2][5]. It is not suitable for patients with certain conditions, including pregnancy, glaucoma, severe heart issues, or a history of drug abuse[5].
Healthcare providers may prescribe phentermine for other uses based on individual patient needs; always consult your physician for guidance specific to your situation[2][6].
References
- [1] Topiramate and Phentermine – StatPearls
- [2] Phentermine (Adipex-P, Lomaira): Uses, Side Effects, … – WebMD
- [3] Phentermine and Topiramate: MedlinePlus Drug Information
- [4] Phentermine: Uses, Interactions, Mechanism of Action – DrugBank
- [5] Phentermine: Drug Uses, Dosage & Side Effects – Drugs.com
- [6] Phentermine: MedlinePlus Drug Information
- [7] Phentermine for weight loss – Mayo Clinic