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Promacta (proh-MAK-tuh)

 A drug used to treat chronic immune thrombocytopenic purpura (a condition in which platelets are destroyed by the immune system). It causes more platelets to be made in the bone marrow. It is also being studied in the treatment of low platelet counts caused by chemotherapy. It is a type of thrombopoietin receptor agonist. Also called eltrombopag olamine.

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