Phentermine


Phentermine is a doctor prescribed drug to help curb your appetite while raising your resting heart rate, it give you pep to the point where you feel like you have to workout just so you can burn energy!

Phentermine

Generic Name: phentermine (FEN ter meen)
Brand names: Adipex-P, Oby-Cap, Suprenza, T-Diet, Zantryl
What is phentermine?
Phentermine is a stimulant that is similar to an amphetamine. Phentermine is an appetite suppressant that affects the central nervous system.
Phentermine is used together with diet and exercise to treat obesity (overweight) in people with risk factors such as high blood pressure, high cholesterol, or diabetes.
Phentermine may also be used for other purposes not listed in this medication guide.

Important information  about phentermine

Do not use phentermine if you haveused an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.
Taking phentermine together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine (Redux) can cause a rare fatal lung disorder called pulmonary hypertension. Do not take phentermine with any other diet medications without your doctor's advice.
Phentermine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert. Drinking alcohol can increase certain side effects of this medicine.
Weight loss during pregnancy can harm an unborn baby, even if you are overweight. Do not use phentermine if you are pregnant.
Phentermine is only part of a complete program of treatment that may also include diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely.
Phentermine may be habit-forming and should be used only by the person it was prescribed for. Never share phentermine with another person, especially someone with a history of drug abuse or addiction. Keep track of the amount of medicine used from each new bottle. Phentermine is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription. Do not stop using phentermine suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using this medicine.

Before taking phentermine

Do not use phentermine if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.
Taking phentermine together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine (Redux) can cause a rare fatal lung disorder called pulmonary hypertension. Do not take tbis medicine with any other diet medications without your doctor's advice.
You should not take phentermine if you are allergic to it, or if you have:
  • a history of heart disease (coronary artery disease, heart rhythm problems, congestive heart failure, pulmonary hypertension);
  • severe or uncontrolled high blood pressure;
  • overactive thyroid;
  • glaucoma;
  • if you are pregnant or breast-feeding;
  • if you are in an agitated state;
  • if you have a history of drug or alcohol abuse; or
  • if you are allergic to other diet pills, amphetamines, stimulants, or cold medications.
To make sure you can safely take phentermine, tell your doctor if you have any of these other conditions:
  • high blood pressure;
  • diabetes;
  • kidney disease; or
  • a thyroid disorder.
FDA pregnancy category X. Weight loss during pregnancy can harm an unborn baby, even if you are overweight. Do not use phentermine if you are pregnant. Phentermine can pass into breast milk and may harm a nursing baby. You should not breast-feed while taking phentermine. Do not give this medication to a child younger than 16 years old.
Phentermine may be habit-forming and should be used only by the person it was prescribed for. Never share this medicine with another person, especially someone with a history of drug abuse or addiction. Keep the medication in a place where others cannot get to it.
How should I take phentermine?
Take phentermine exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
Some brands of phentermine should be taken on an empty stomach before breakfast or within 2 hours after breakfast.
Suprenza disintegrating tablets can be taken with or without food.
Using dry hands, remove the Suprenza tablet from the medicine bottle and place the tablet in your mouth. It will begin to dissolve right away. Do not swallow the tablet whole. Allow it to dissolve in your mouth without chewing.
To prevent sleep problems, take this medication early in the day, no later than 6:00 pm.
Talk with your doctor if you have increased hunger or if you otherwise think the medication is not working properly. Taking more of this medication will not make it more effective and can cause serious, life-threatening side effects.
Phentermine should be taken only for a short time, such as a few weeks.
Do not stop taking phentermine suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using phentermine.
Store at room temperature away from moisture and heat.
Keep track of the amount of medicine used from each new bottle. Phentermine is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription.
See also: Phentermine dosage (in more detail)

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of phentermine can be fatal.
Overdose symptoms may include confusion, hallucinations, panic, feeling hostile or aggressive, nausea, vomiting, diarrhea, stomach cramps, irregular heartbeat, rapid breathing, overactive reflexes, confusion, seizure (convulsions), feeling light-headed, or fainting.

What should I avoid while taking phentermine?

Drinking alcohol can increase certain side effects of this medicine. Phentermine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

See also: Phentermine and alcohol (in more detail)

Phentermine side effects

Get emergency medical help if you have any of these signs of an allergic reaction to phentermine: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have a serious side effect such as:
  • feeling short of breath, even with mild exertion;
  • chest pain, feeling like you might pass out;
  • swelling in your ankles or feet;
  • pounding heartbeats or fluttering in your chest;
  • confusion or irritability, unusual thoughts or behavior;
  • feelings of extreme happiness or sadness; or
  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, shortness of breath, uneven heartbeats, seizure).
Less serious phentermine side effects may include:
  • feeling restless or hyperactive;
  • headache, dizziness, tremors;
  • sleep problems (insomnia);
  • dry mouth or an unpleasant taste in your mouth;
  • diarrhea or constipation, upset stomach; or
  • increased or decreased interest in sex, impotence.
This is not a complete list of side effects and others may occur. Call your doctor formedical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Phentermine side effects (in more detail)

Phentermine Dosing Information

Usual Adult Phentermine Dose for Weight Loss:
Initial dose: 8 mg orally 3 times a day 30 minutes before meals.
Alternatively, phentermine hydrochloride and phentermine resin may be given as a single dose of 15-37.5 mg orally once a day before breakfast or 10-14 hours before retiring.
Usual Pediatric Phentermine Dose for Weight Loss:
Child > 12 years:
Initial dose: 8 mg orally 3 times a day 30 minutes before meals.
Alternatively, phentermine hydrochloride and phentermine resin may be given as a single dose of 15-37.5 mg orally once a day before breakfast or 10-14 hours before retiring.

What other drugs will affect phentermine?

Tell your doctor about all other medicines you use, especially:
  • insulin or oral diabetes medication;
  • certain blood pressure medications, such as doxazosin (Cardura), prazosin (Minipress), or terazosin (Hytrin); or
  • an antidepressant such as citalopram (Celexa), fluoxetine (Prozac, Sarafem, Symbyax), paroxetine (Paxil), sertraline (Zoloft), and others.
This list is not complete and other drugs may interact with phentermine. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Next Page → Side Effects

More Phentermine resources

Compare Phentermine with other medications

Where can I get more information?

  • Your pharmacist can provide more information about phentermine.
  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.
Copyright 1996-2012 Cerner Multum, Inc. Version: 7.03. Revision Date: 2012-07-19, 3:07:07 PM.


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