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The median sc lethal dose of terbutaline sulfate in mature rats was approximately 165 mg/kg (approximately 2,700 times the maximum recommended daily sc dose for adults on a mg/m2 basis). The median sc lethal dose of terbutaline sulfate in young rats was approximately 2,000 mg/kg (approximately 32,000 times the maximum recommended daily sc dose for adults on a mg/m2 basis).
The expected symptoms with overdosage are those of excessive beta-adrenergic stimulation and/or occurrence or exaggeration of any of the symptoms listed under ADVERSE REACTIONS, e.g., seizures, angina, hypertension or hypotension, tachycardia with rates up to 200 beats per minute, arrhythmias, nervousness, headache, tremor, dry mouth, palpitation, nausea, dizziness, fatigue, malaise, and insomnia. Hypokalemia may also occur. There is no specific antidote. Treatment consists of discontinuation of terbutaline together with appropriate symptomatic therapy. The judicious use of a cardioselective beta-receptor blocker may be considered, bearing in mind that such medication can produce bronchospasm. There is insufficient evidence to determine if dialysis is beneficial for overdosage of terbutaline.
Terbutaline sulfate injection is contraindicated in patients known to be hypersensitive to sympathomimetic amines or any component of this drug product.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 5/28/2008
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