Adult Medication

Brand Names: US

Adipex-P; Lomaira; Suprenza [DSC]

What is this drug used for?

  • It is used to treat obesity.

What do I need to tell my doctor BEFORE I take this drug?

  • If you have an allergy to phentermine or any other part of this drug.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have ever had any of these health problems: Heart disease like heart failure or a heartbeat that is not normal, drug abuse, high blood pressure, or stroke.
  • If you have any of these health problems: Glaucoma; nervous, anxious, or tense state; or overactive thyroid.
  • If you have taken certain drugs used for low mood (depression) like isocarboxazid, phenelzine, or tranylcypromine or drugs used for Parkinson’s disease like selegiline or rasagiline in the last 14 days. Taking this drug within 14 days of those drugs can cause very bad high blood pressure.
  • If you are taking any of these drugs: Fluoxetine, fluvoxamine, paroxetine, or sertraline.
  • If you are taking or will be taking another drug like this one.
  • If you are pregnant or may be pregnant. Do not take this drug if you are pregnant.
  • If you are breast-feeding. Do not breast-feed while you take this drug.
This is not a list of all drugs or health problems that interact with this drug.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take this drug?

All products:

  • Tell all of your health care providers that you take this drug. This includes your doctors, nurses, pharmacists, and dentists.
  • Avoid driving and doing other tasks or actions that call for you to be alert until you see how this drug affects you.
  • People who take drugs for weight loss like this drug may have a higher chance of having raised pressure in the lungs. This is rare but is often deadly. Talk with your doctor.
  • If you have been taking this drug for a long time or at high doses, it may not work as well and you may need higher doses to get the same effect. This is known as tolerance. Call your doctor if this drug stops working well. Do not take more than ordered.
  • If you have been taking this drug for many weeks, talk with your doctor before stopping. You may want to slowly stop this drug.
  • This drug may be habit-forming; avoid long-term use. Tell your doctor if you have a history of drug or alcohol abuse.
  • This drug may cause unsafe heart-related side effects. Tell your doctor if you have any heart disease.
  • Check blood pressure and heart rate as the doctor has told you. Talk with the doctor.
  • If you have high blood sugar (diabetes), talk with your doctor.
  • Follow the diet and workout plan that your doctor told you about.
  • Talk with your doctor before you drink alcohol.
  • Do not give to a child younger than 17 years of age.
  • This drug may cause harm to the unborn baby if you take it while you are pregnant. If you are pregnant or you get pregnant while taking this drug, call your doctor right away.

Oral-disintegrating tablet:

  • If you are allergic to tartrazine, talk with your doctor. Some products have tartrazine.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Change in how you act.
  • Chest pain or pressure or a fast heartbeat.
  • A heartbeat that does not feel normal.
  • Mood changes.
  • Shakiness.
  • Shortness of breath.
  • Swelling on legs or feet.
  • Very bad dizziness or passing out.
  • Very bad headache.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
  • Dizziness.
  • Feeling nervous and excitable.
  • Headache.
  • Hard stools (constipation).
  • Loose stools (diarrhea).
  • Dry mouth.
  • Not able to sleep.
  • Bad taste in your mouth.
  • Lowered interest in sex.
  • Change in sex ability.
  • Restlessness.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best taken?

Use this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely.

All dose forms:

  • Take this drug early in the day to prevent sleep problems.

Tablets and capsules:

  • Take before or after breakfast as your doctor has told you.

Oral-disintegrating tablet:

  • Take with or without food.
  • Be sure your hands are dry before you touch this drug.
  • Place on your tongue and let it melt. Water is not needed. Do not swallow it whole. Do not chew, break, or crush it.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

How do I store and/or throw out this drug?

  • Store at room temperature.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date



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