Chronic Hepatitis C-associated Thrombocytopenia-
Severe Aplastic Anemia-
In patients with chronic hepatitis C-associated thrombocytopenia, the most common adverse reactions (greater than or equal to 10% and greater than placebo) were: anemia, pyrexia, fatigue, headache, nausea, diarrhea, decreased appetite, influenza-like illness, asthenia, insomnia, cough, pruritus, chills, myalgia, alopecia, and peripheral edema. In patients with severe aplastic anemia, the most common adverse reactions (greater than or equal to 20%) were: nausea, fatigue, cough, diarrhea, and headache.
Nursing Mothers: It is not known whether Eltrombopag is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from Eltrombopag, a decision should be made whether to discontinue nursing or to discontinue Eltrombopag taking into account the importance of Eltrombopag to the mother.
Thrombotic or Thromboembolic Complications: Portal vein thrombosis has been reported in patients with chronic liver disease receiving Eltrombopag. Monitor platelet counts regularly.
Geriatric Use: Of the 106 patients in two randomized clinical trials of Eltrombopag 50 mg in chronic ITP, 22% were 65 years of age and over, while 9% were 75 years of age and over. In the two randomized clinical trials of Eltrombopag in patients with chronic hepatitis C and thrombocytopenia, 7% were 65 years of age and over, while fewer than 1% were 75 years of age and over. No overall differences in safety or effectiveness were observed between these patients and younger patients in the placebo-controlled trials, but the greater sensitivity of some older individuals cannot be ruled out.
Hepatic Impairment: Hepatic impairment influences the exposure of Eltrombopag. Reduce the initial dose of Eltrombopag in patients with chronic ITP (adult and pediatric patients 6 years and older only) or severe aplastic anemia who also have hepatic impairment (Child-Pugh Class A, B, C). No dosage adjustment is necessary for patients with chronic hepatitis C and hepatic impairment.
Renal Impairment: No adjustment in the initial dose of Eltrombopag is needed for patients with renal impairment. Closely monitor patients with impaired renal function when administering Eltrombopag.
In one report, a subject who ingested 5,000 mg of Eltrombopag 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, andPlasmapheresis; 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 Eltrombopag in accordance with dosing and administration recommendations.