Medically reviewed by Lindsay Cook, PharmD Key Takeaways Phentermine is prescribed for weight loss and off-label for ADHD, ...

Phentermine is a generic drug prescribed short term for weight loss in adults. As with other drugs, phentermine can cause side effects, such as effects on the brain and mood in both females and males.

Phentermine interacts with several types of medications, including other stimulants, MAOIs, diabetes medications, SSRIs, and blood pressure medications, potentially leading to increased side effects ...