November 29, 2015
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Bontril SR

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Bontril SR



Manifestations of acute overdosage may include restlessness, tremor, hyperreflexia, rapid respiration, confusion, assaultiveness, hallucinations, panic states.

Fatigue and depression usually follow the central stimulation.

Cardiovascular effects include arrhythmias, hypertension, or hypotension and circulatory collapse. Gastrointestinal symptoms include nausea, vomiting, diarrhea, and abdominal cramps. Poisoning may result in convulsions, coma, and death.

Management of acute intoxication is largely symptomatic and includes lavage and sedation with a barbiturate. Experience with hemodialysis or peritoneal dialysis is inadequate to permit recommendation in this regard.

Acidification of the urine increases phendimetrazine tartrate excretion.

Intravenous phentolamine (Regitine) has been suggested for possible acute, severe hypertension, if this complicates overdosage.


Advanced arteriosclerosis, symptomatic cardiovascular disease, moderate and severe hypertension, hyperthyroidism, known hypersensitivity, or idiosyncrasy to the sympathomimetic amines, glaucoma. Agitated states. Patients with a history of drug abuse. Use in patients taking other CNS stimulants including monoamine oxidase inhibitors.

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 3/26/2009


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