phendimetrazine

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phendimetrazine

Pronunciation:fen di MEH tra zeen
Brand:Adipost, Bontril PDM, Bontril Slow Release, Melfiat

Bontril PDM

round, green/yellow, imprinted with B 35, V

Image of Bontril PDM
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Bontril Slow Release 105 mg-AMA

green/yellow, imprinted with A, 047

Image of Bontril Slow Release 105 mg-AMA
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Bontril

green/yellow, imprinted with C, 8647

Image of Bontril
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What is the most important information I should know about phendimetrazine?

dizzyPhendimetrazine may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.
habitPhendimetrazine may be habit-forming and should be used only by the person it was prescribed for. Keep the medication in a secure place where others cannot get to it.
donotDo not stop using phendimetrazine suddenly after long-term use, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using phendimetrazine.
nocrushDo not crush, chew, break, or open the extended-release capsule. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.

What is phendimetrazine?

Phendimetrazine is similar to an amphetamine. Phendimetrazine stimulates the central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.

Phendimetrazine is used as a short-term supplement to diet and exercise in the treatment of obesity.

Phendimetrazine may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before taking phendimetrazine?

donotDo not use phendimetrazine 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.
donotYou should not use this medication if you are allergic to phendimetrazine, or if you have:
  • coronary artery disease (hardening of the arteries);
  • heart disease;
  • severe or uncontrolled high blood pressure;
  • heart murmur or heart valve disorder;
  • pulmonary arterial hypertension (PAH);
  • overactive thyroid;
  • glaucoma;
  • severe agitation or nervousness;
  • 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 phendimetrazine, tell your doctor if you have any of these other conditions:

  • high blood pressure;
  • diabetes;
  • an anxiety disorder;
  • epilepsy or seizure disorder; or
  • if you have used other diet pills in the past year (prescription, over-the-counter, or herbal products).
nopregIt is not known whether phendimetrazine will harm an unborn baby. Do not take phendimetrazine without first talking to your doctor if you are pregnant.
nobrfeedIt is also not known whether phendimetrazine passes into breast milk. Do not take phendimetrazine without first talking to your doctor if you are breast-feeding a baby.

How should I take phendimetrazine?

Take 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. Phendimetrazine should be taken only for a short time, such as a few weeks.

Phendimetrazine is usually taken once daily. Follow your doctor's instructions.

icon26Take phendimetrazine on an empty stomach, 30 to 60 minutes before your morning meal.
nocrushDo not crush, chew, break, or open the extended-release capsule. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.
donotYou should lose at least 4 pounds during the first 4 weeks of taking phendimetrazine and eating a low calorie diet. Tell your doctor if you do not lose at least 4 pounds after taking the medication for 4 weeks.
emtDo not stop using phendimetrazine suddenly after long-term use, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using phendimetrazine.
donotNever take more of this medication than is prescribed for you. Too much phendimetrazine could be very dangerous to your health. 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.
rtStore at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

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.

donotA dose taken too late in the day will cause insomnia.

What happens if I overdose?

emtSeek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of phendimetrazine can be fatal.

Overdose symptoms of a phendimetrazine overdose include nausea, vomiting, diarrhea, stomach cramps, confusion, panic, hallucinations, extreme restlessness, feeling tired or depressed, ringing in your ears, chest pain, slow heart rate, weak pulse, fainting, seizure, or slow breathing (breathing may stop).

What should I avoid while taking phendimetrazine?

dizzyPhendimetrazine may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

What are the possible side effects of phendimetrazine?

emtGet emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
donotStop using phendimetrazine and 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, confusion, chest pain, shortness of breath, uneven heartbeats, seizure).

Less serious side effects may include:

  • feeling restless or hyperactive;
  • headache, dizziness, tremors;
  • sleep problems (insomnia);
  • flushing (warmth, redness, or tingly feeling);
  • dry 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 for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect phendimetrazine?

Tell your doctor about all other medicines you use, especially:

  • insulin; or
  • any other diet pills.

This list is not complete and other drugs may interact with phendimetrazine. 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.

Where can I get more information?

Your pharmacist can provide more information about phendimetrazine.


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.

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