Generic Name: Phentermine

  • What is Adipex-P?

    Adipex-P, an appetite suppressant, is prescribed for short-term use as part of an overall weight reduction program that also includes dieting, exercise, and counseling. The drug is for use only by excessively overweight individuals who have a condition--such as diabetes, high blood pressure, or high cholesterol--that could lead to serious medical problems.

  • What is the most important information I should know about Adipex-P?

    Adipex-P will lose its effect after a few weeks and should be discontinued when this happens. If you try to boost its effectiveness by increasing the dose, you will run the risk of serious side effects and dependence on the drug.

    This drug may cause primary pulmonary hypertension (PPH), a rare but serious disease of the lungs. Symptoms include difficulty breathing, chest pain, shortness of breath, fainting spells, or swollen ankles. Rarely, Adipex-P may also cause valvular heart disease.

  • Who should not take Adipex-P?

    Do not take Adipex-P if you are allergic to any of its ingredients or have ever had a reaction to stimulants.

    Do not take this drug if you have arteriosclerosis (thickening of the artery wall), heart disease, high blood pressure, a hyperactive thyroid, or glaucoma.

    Do not take Adipex-P if you are agitated, have a history of drug abuse, or during or within 14 days after taking monoamine oxidase inhibitors (MAOIs), a class of drugs used to treat depression, psychiatric or emotional disorders, or Parkinson's disease.

  • What should I tell my doctor before I take the first dose of Adipex-P?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Adipex-P. Also, talk to your doctor about your complete medical history, especially if you have a history of drug dependence, hypertension, or diabetes.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults and adolescents >16 years: The usual dosage of Adipex-P is 1 capsule or tablet per day.

  • How should I take Adipex-P?

    Take Adipex-P before breakfast or 1-2 hours after breakfast. Tablets can be broken in half, if necessary.

  • What should I avoid while taking Adipex-P?

    Avoid driving or other hazardous activities until you know how Adipex-P affects you. Do not drink alcohol while taking Adipex-P.

  • What are possible food and drug interactions associated with Adipex-P?

    If Adipex-P is taken with certain other drugs, the effects of either can be increased, decreased, or altered. It is especially important to check with your doctor before combining Adipex-P with the following: blood pressure medications, fluoxetine, fluvoxamine, guanethidine, paroxetine, MAOIs, diabetes medications such as insulin, sertraline, and other weight-loss drugs.

    Adipex-P should never be combined with the weight-loss drugs fenfluramine and dexfenfluramine; very dangerous side effects could result.

  • What are the possible side effects of Adipex-P?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: changes in sex drive, constipation, diarrhea, dizziness, dry mouth, exaggerated feelings of depression or elation, headache, high blood pressure, hives, impotence, inability to fall or stay asleep, increased heart rate, overstimulation, restlessness, stomach or intestinal problems, throbbing heartbeat, tremors, unpleasant taste

  • Can I receive Adipex-P if I am pregnant or breastfeeding?

    The effects of Adipex-P during pregnancy and breastfeeding are unknown. Talk with your doctor before taking this drug if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Adipex-P?

    Skip the missed dose completely. Take the next dose at the regularly scheduled time.

  • How should I store Adipex-P?

    Store at room temperature.

Meet the Pharmacists

I'm Beth Isaac, PharmD. Welcome to PDR Health!

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