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In the event of overdose, platelet counts may increase excessively and result in thrombotic/thromboembolic complications.
In one report, a subject who ingested 5,000 mg of PROMACTA had a platelet count increase to a maximum of 929 x 109/L at 13 days following the ingestion. The patient also experienced rash, bradycardia, ALT/AST elevations, and fatigue. The patient was treated with gastric lavage, oral lactulose, intravenous fluids, omeprazole, atropine, furosemide, calcium, dexamethasone, and plasmapheresis; however, the abnormal platelet count and liver test abnormalities persisted for 3 weeks. After 2 months' follow-up, all events had resolved without sequelae.
In case of an overdose, consider oral administration of a metal cation-containing preparation, such as calcium, aluminum, or magnesium preparations to chelate eltrombopag and thus limit absorption. Closely monitor platelet counts. Reinitiate treatment with PROMACTA in accordance with dosing and administration recommendations [see DOSAGE AND ADMINISTRATION].
Last reviewed on RxList: 9/2/2015
This monograph has been modified to include the generic and brand name in many instances.
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