Phentermine Side Effects, Explained

What to know about phentermine side effects

Where side effect information comes from

Phentermine is an FDA-approved prescription appetite suppressant used for weight management. It is a generic medication, not a compounded formulation.

Because it is a prescription medication, it carries an FDA-approved label. That label is the source for any list of possible side effects.

This page does not list them for you, and it does not rank them or describe how likely any one of them is. A licensed provider reviews the label with you in the context of your own health history.

Your pharmacy also supplies the label information with your medication. Read it, and bring your questions to your provider.

How a Persona provider monitors your plan

A licensed physician prescribes phentermine only after an individualized clinical assessment. That assessment looks at your health history before anything is prescribed.

The prescribing physician sets the timing and duration of your plan. The same physician monitors your progress over time and adjusts the plan.

Monitoring is part of the plan, not an extra step. What you report between visits feeds directly into what your provider decides next.

How to raise a concern between visits

If you notice something you did not expect, tell your care team. You do not need to wait for a scheduled visit to bring it up.

It helps to describe what you noticed, when it started, and whether it is still happening. Your provider can then ask follow-up questions.

Only your provider can advise you on what to do next, including whether anything about your plan should change. Do not make that call on your own based on what you read here.

If you think you are having a medical emergency, seek emergency care right away.

What the medication does

Phentermine works on the neurotransmitters in the brain that control appetite. It reduces hunger and cravings, which makes a reduced-calorie diet easier to follow.

It supports weight loss when combined with a reduced-calorie diet. No special or pre-packaged food is required.

With Persona, the initial medical consultation is free, and medication is delivered directly to you.