Phentermine is a prescription medication primarily used to suppress appetite and help with weight loss in people with obesity . It is approved for short-term use (a few weeks) and must be combined with a plan that includes diet, exercise, and behavioral changes.
Here is a quick overview of its main uses and requirements:
- Aspect Summary
- Primary Use Short-term weight loss management for people with obesity .
- How it Works Appetite suppressant that acts on the central nervous system .
- Prescription Requirements BMI of 30+ OR BMI of 27+ with at least one weight-related risk factor (e.g., high blood pressure, diabetes, high cholesterol) .
- Treatment Context Must be used alongside exercise, a reduced-calorie diet, and behavioral therapy.
- Treatment Duration Short-term, typically a few weeks.
Phentermine is not for anyone who just wants to lose a few pounds. It is specifically indicated for patients who meet strict medical criteria :
- Body Mass Index (BMI) of 30 kg/m² or greater. This is considered obese.
- BMI of 27 kg/m² or greater (considered overweight) if the patient also has at least one weight-related risk factor, such as controlled high blood pressure, diabetes, or high cholesterol.
Phentermine is a controlled substance (Schedule IV) due to its similarity to amphetamines and the risk of dependence . It is not safe for everyone and cannot be used if you:
- Have a history of cardiovascular disease (e.g., coronary artery disease, stroke, arrhythmias, uncontrolled high blood pressure) .
- Have hyperthyroidism or glaucoma .
- Have a history of drug abuse .
- Are pregnant or breastfeeding .
- Have taken monoamine oxidase inhibitors (MAOIs) within the last 14 days .
Phentermine is a powerful tool for weight loss but comes with significant restrictions. It is essential to have an in-depth consultation with a doctor to see if you meet the criteria and if it is safe for you.