What is phentermine?

Phentermine is similar to an amphetamine. It stimulates the central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.Phentermine is used together with diet and exercise to treat Weight Loss especially in people with risk factors such as high blood pressure, high cholesterol, or diabetes.Phentermine may also be used for purposes not listed in this medication guide Weight Loss.

Before taking this medicine

You should not use phentermine if you are allergic to it, or if you have:

  1. a history of heart disease (coronary artery disease, heart rhythm problems, congestive heart failure, stroke);
  2. severe or uncontrolled high blood pressure;
  3. overactive thyroid;
  4. glaucoma;
  5. extreme agitation or nervousness;
  6. a history of drug abuse; or
  7. if you take other diet pills.

Do not use phentermine if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

How should I take phentermine?

Take phentermine exactly as prescribed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose.

Doses are normally taken before breakfast, or 1 to 2 hours after breakfast. Follow your doctor’s dosing instructions very carefully.

Never use phentermine in larger amounts, or for longer than prescribed.

Taking more of this medication will not make it more effective and can cause serious, life-threatening side effects.

This medicine is for short-term use only. The effects of appetite suppression may wear off after a few weeks.Phentermine may be habit-forming.

Call your doctor at once if you think this medicine is not working as well, or if you have not lost at least 4 pounds within 4 weeks.

Do not stop using this medicine suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

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