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A 59-year-old man with metastatic melanoma and no known pre-existing cardiac conditions developed severe hypotension and dizziness 40 minutes after receiving a 15 minute intravenous infusion of 1000 mg (13 mg/kg) of dolasetron mesylate. Treatment for the overdose consisted of infusion of 500 mL of a plasma expander, dopamine, and atropine. The patient had normal sinus rhythm and prolongation of PR, QRS and QTc intervals on an ECG recorded 2 hours after the infusion. The patient's blood pressure was normal 3 hours after the event and the ECG intervals returned to baseline on follow-up. The patient was released from the hospital 6 hours after the event.
Following a suspected overdose of ANZEMET Injection (dolasetron mesylate injection) , a patient found to have second-degree or higher
AV conduction block with ECG should undergo cardiac telemetry monitoring.
There is no known specific antidote for dolasetron mesylate, and patients with suspected overdose should be managed with supportive therapy. Individual doses as large as 5 mg/kg intravenously or 400 mg orally have been safely given to healthy volunteers or cancer patients.
A 7-year-old boy received 6 mg/kg dolasetron mesylate orally before surgery. No symptoms occurred and no treatment was required.
Single intravenous doses of dolasetron mesylate at 160 mg/kg in male mice and 140 mg/kg in female mice and rats of both sexes (6.3 to 12.6 times the recommended human dose based on body surface area) were lethal. Symptoms of acute toxicity were tremors, depression and convulsions.
ANZEMET Injection (dolasetron mesylate injection) is contraindicated in patients known to have hypersensitivity to the drug.
Last reviewed on RxList: 10/27/2009
This monograph has been modified to include the generic and brand name in many instances.
Additional Anzemet Injection Information
- Anzemet Injection Drug Interactions Center: dolasetron iv
- Anzemet Injection Side Effects Center
- Anzemet Injection FDA Approved Prescribing Information including Dosage
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