Eltrombopag belongs to the class of medications called thrombopoietin receptor agonists.
It is used to increase the number of platelets in the blood for adults and children with chronic (long-term) immune thrombocytopenia purpura (ITP). It may be used to treat people who have had their spleen removed and the medications that are used as first-line treatments are no longer working. It may also be used to treat adults for whom removing the spleen is not an option but who have low platelet counts.
Eltrombopag is also used to increase platelet counts for people with chronic hepatitis C virus infection, so that they can use interferon to treat the infection. This medication should only be used by people with chronic hepatitis C infection when the number of platelets in the blood is too low to start treatment with interferon.
Eltrombopag is also used to treat adults with severe aplastic anemia (SAA) when other treatments have not worked.
Eltrombopag works by increasing the production of platelets in the body.
This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here.
Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
25 mg
Each white, round, biconvex, film-coated tablet, debossed with "GS NX3" and "25", contains 25 mg of eltrombopag as eltrombopag olamine. Nonmedicinal ingredients: magnesium stearate, mannitol, microcrystalline cellulose, povidone, sodium starch glycolate, hypromellose, macrogol, titanium dioxide, and polysorbate.
50 mg
Each brown, round, biconvex, film-coated tablet, debossed with "GS UFU" and "50", contains 50 mg of eltrombopag as eltrombopag olamine. Nonmedicinal ingredients: magnesium stearate, mannitol, microcrystalline cellulose, povidone, sodium starch glycolate, hypromellose, macrogol, titanium dioxide, iron oxide yellow, and iron oxide red.
The recommended starting dose of eltrombopag for adults and children over 6 years of age, for the treatment of ITP is 50 mg taken once daily. Depending on your platelet counts after 2 to 3 weeks, your doctor may increase your dose to a maximum of 75 mg daily.
Children between 1 and 6 years of age should be given a starting dose of 25 mg taken by mouth once daily, only if they are able to swallow tablets whole. The tablets should not be crushed and mixed with water.
The starting dose for people with chronic hepatitis C is 25 mg taken once daily. This dose may be increased every 2 weeks to a maximum of 100 mg once daily.
The starting dose for people with SAA is 50 mg taken once daily. This dose may be increased every 2 weeks to a maximum of 150 mg once daily.
Eltrombopag tablets should be swallowed whole with water. Do not crush or chew the tablets, or crush the tablets to mix in water. Eltrombopag should be taken at least 2 hours before or 4 hours after antacids, dairy products, mineral supplements or any other products containing aluminum, calcium, iron, magnesium, selenium, or zinc. It may be taken with food that contains very little or no calcium.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important that this medication be taken exactly as prescribed by your doctor. If it is necessary to stop taking eltrombopag, your doctor should do regular blood tests to ensure that your platelet count does not fall too low.
If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store this medication at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
Do not take eltrombopag if you:
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.
The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Stop taking the medication and seek immediate medical attention if any of the following occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Blood cell changes: Eltrombopag stimulates cells in the bone marrow that produce platelets as well as other blood cells. Sometimes this causes changes in the blood cells or bone marrow, which can increase the risk of bone marrow cell disorders and blood cancers. Your doctor will do regular blood tests to identify changes in the blood cells or bone marrow before it becomes severe.
The increased speed of blood cell formation may cause certain blood diseases such as blood cancers to progress. Speak to your doctor if you have concerns about this.
Blood clots: This medication may increase the chance of blood clot formation, causing reduction of blood flow to organs or the extremities.
If you have a history of clotting you may be at increased risk of experiencing blood clot-related problems such as heart attack, stroke, or clots in the deep veins of your leg. Discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
If you experience symptoms such as sharp pain and swelling in the leg, difficulty breathing, chest pain, blurred vision, or difficulty speaking, contact your doctor immediately.
Cataracts: Eltrombopag has been reported to cause cataracts or to worsen them for people who had the beginnings of cataracts before taking the medication. If you notice changes in your vision while taking this medication, speak with your doctor.
Dizziness: Eltrombopag may cause dizziness, particularly when rising from a sitting or lying position. Rise slowly to help reduce this effect. Dizziness may also affect your ability to drive or operate machinery. Avoid these and other hazardous tasks until you have determined how this medication affects you.
Hepatitis C infection: People with chronic hepatitis C infection may be at an increased risk of liver failure and death when being treated with interferon and ribavirin. This is more likely to occur when taking eltrombopag as well.
Kidney function: Kidney disease or reduced kidney function may cause this medication to not be as effective. If you have reduced kidney function or kidney disease, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Liver function: Liver disease or reduced liver function may cause this medication to build up in the body, causing side effects. If you have liver problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Your doctor may want to test your liver function regularly with blood tests while you are taking this medication.
Additionally, eltrombopag may reduce liver function and can cause life-threatening liver failure. If you experience symptoms of liver problems such as fatigue, feeling unwell, loss of appetite, nausea, yellowing of the skin or whites of the eyes, dark urine, pale stools, abdominal pain or swelling, and itchy skin, contact your doctor immediately.
People with severely reduced liver function should not take this medication.
People of East Asian descent: When treating ITP and SAA, people of East Asian heritage (Chinese, Japanese, Taiwanese, Thai, or Korean) may need to start at a lower dose of eltrombopag. The dose for treating hepatitis C does not need to be adjusted.
Stopping this medication: When you stop taking this medication, your platelet count will return to what it was before you started taking eltrombopag, usually within 4 weeks. The reduced number of platelets in the blood can make it difficult to stop cuts from bleeding. If you notice any signs of bleeding, such as frequent nosebleeds, unexplained bruising, or black and tarry stools, notify your doctor as soon as possible. Your doctor should check your platelet counts regularly for at least 4 weeks after you stop taking this medication.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: It is not known if eltrombopag passes into breast milk. If you are breast-feeding and are taking this medication, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using this medication to treat any condition have not been established for children less than 1 year of age. Children who can swallow tablets may be prescribed this medication to treat ITP. It should not be given to children who cannot swallow whole tablets. There is no information regarding the safety and effectiveness of using this medication to treat chronic hepatitis C infection or severe aplastic anemia in children less than 18 years of age.
There may be an interaction between eltrombopag and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
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