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Overdoses (up to 10-fold of the prescribed dose) occurred in patients treated with intravenous topotecan. The primary complication of overdosage is bone marrow suppression. The observed signs and symptoms of overdose are consistent with the known adverse reactions associated with HYCAMTIN for intravenous use [see ADVERSE REACTIONS]. In addition, elevated hepatic enzymes and mucositis have been reported following overdose. One patient received a single dose of 40 mg/m² of intravenous topotecan and developed gastrointestinal toxicity, skin toxicity, and myelosuppresion leading to septic shock. Another patient received a single dose of 35 mg/m² and experienced severe, reversible neutropenia.
There is no known antidote for overdosage with HYCAMTIN. If an overdose is suspected, monitor the patient for bone marrow suppression and institute supportive-care measures (such as prophylactic G-CSF and antibiotic therapy) as appropriate.
HYCAMTIN is contraindicated in patients who have a history of severe hypersensitivity reactions (e.g., anaphylactoid reactions) to topotecan or to any of its ingredients. HYCAMTIN should not be used in patients with severe bone marrow depression.
Last reviewed on RxList: 3/18/2014
This monograph has been modified to include the generic and brand name in many instances.
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