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Pronunciation |
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(fen
dye ME tra
zeen) |
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U.S. Brand
Names |
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Bontril PDM®; Bontril®
Slow-Release; Dital®; Dyrexan-OD®; Melfiat-105®
Unicelles®; Plegine®; Prelu-2®; Rexigen
Forte® |
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Generic
Available |
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Yes |
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Synonyms |
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Phendimetrazine Tartrate |
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Pharmacological Index |
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Anorexiant |
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Use |
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An appetite suppressant during the first few weeks of dieting to help
establish new eating habits; its effectiveness lasts only for short periods
(3-12 weeks) |
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Restrictions |
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C-III |
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Contraindications |
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Known hypersensitivity to phendimetrazine |
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Warnings/Precautions |
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Anorexigens have been reported to be associated with the occurrence of
serious regurgitant cardiac valvular disease, including disease of the mitral,
aortic, and/or tricuspid valves. Primary pulmonary hypertension (PPH) - a rare,
frequently fatal disease of the lungs - has been found to occur with increased
frequency in patients receiving anorexigens. There have been reports of PPH and
valvular irregularities in users of phendimetrazine tartrate tablets. The safety
and effectiveness of the combined use of phendimetrazine with other anorexigens
in the treatment of obesity have not been established, and there is no approved
use of these products together in the treatment of obesity. Phendimetrazine is
approved only as a single agent for short-term use (ie, a few
weeks). |
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Adverse
Reactions |
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>10%:
Cardiovascular: Hypertension
Central nervous system: Euphoria, nervousness, insomnia
1% to 10%:
Central nervous system: Confusion, mental depression, restlessness
Gastrointestinal: Nausea, vomiting, constipation
Endocrine & metabolic: Changes in libido
Hematologic: Blood dyscrasias
Neuromuscular & skeletal: Tremor
Ocular: Blurred vision
<1%:
Cardiovascular: Tachycardia, arrhythmias
Central nervous system: Restlessness, headache
Dermatologic: Alopecia
Gastrointestinal: Diarrhea, abdominal cramps
Genitourinary: Dysuria
Neuromuscular & skeletal: Myalgia
Renal: Polyuria
Respiratory: Dyspnea
Miscellaneous: Diaphoresis (increased) |
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Usual Dosage |
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Adults: Oral:
Sustained release: 105 mg once daily in the morning before breakfast
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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Use vasoconstrictor with caution in patients taking phendimetrazine.
Phendimetrazine can enhance the sympathomimetic response to epinephrine leading
to potential hypertension and cardiotoxicity. |
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Dental Health:
Effects on Dental Treatment |
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Patients taking phendimetrazine may present with hypertension; monitor blood
pressure |
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Patient
Information |
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Take with a full glass of water one hour before meals (unless your doctor
directs otherwise). Tell your doctor about unusual or allergic reactions you
have had to any medications, especially to phendimetrazine or other appetite
suppressants (such as benzphetamine, phenmetrazine, diethylpropion,
fenfluramine, mazindol, and phentermine) or to epinephrine, norepinephrine,
ephedrine, amphetamines, dextroamphetamine, phenylephrine, phenylpropanolamine,
pseudoephedrine, albuterol, metaproterenol, or terbutaline. Before having
surgery or other medical or dental treatment, tell your doctor or dentist you
are taking this drug. Phendimetrazine is related to amphetamine and may be
habit-forming when taken for long periods of time (both physical and
psychological dependence can occur). You should not increase the dosage of this
medication or take it for longer than 12 weeks without first consulting your
doctor. It is also important that you not stop taking this medication
abruptly--fatigue, sleep disorders, mental depression, nausea, vomiting, or
stomach cramps or pain could occur. Your doctor may, therefore, want to decrease
your dosage gradually. Be sure to tell your doctor if you are pregnant. Although
studies of phendimetrazine in humans have not been conducted, some of the
appetite suppressants have been shown to cause side effects in the fetuses of
animals that received large doses during pregnancy. Also, tell your doctor if
you are breast-feeding an infant. It is not known whether this medication passes
into breast milk. |
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Dosage Forms |
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Capsule, as tartrate: 35 mg
Capsule, as tartrate, sustained release (Adipost®,
Bontril® Slow-Release, Dital®,
Dyrexan-OD®, Melfiat-105®
Unicelles®, Prelu-2®; Rexigen
Forte®): 105 mg
Tablet, as tartrate (Bontril PDM®,
Plegine®): 35 mg |
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