May 24, 2017
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Promacta Patient Information including How Should I Take

What should I discuss with my health care provider before taking eltrombopag (Promacta)?

You should not use eltrombopag if you are allergic to it.

To make sure eltrombopag is safe for you, tell your doctor if you have:

  • liver disease (unless you are being treated for hepatitis C);
  • kidney disease;
  • high levels of platelets in your blood;
  • a blood cancer or bone marrow disorder;
  • if you have ever had cataracts or a blood clot;
  • if your spleen has been removed; or
  • if you are of East Asian descent (Chinese, Japanese, Taiwanese, or Korean).

FDA pregnancy category C. It is not known whether eltrombopag will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.

If you are pregnant, your name may be listed on a pregnancy registry. This is to track the outcome of the pregnancy and to evaluate any effects of eltrombopag on the baby.

It is not known whether eltrombopag passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Taking eltrombopag may increase your risk of developing blood cancers, especially if you have myelodysplastic syndrome (also called "preleukemia"). Talk with your doctor if you have concerns about this risk.

How should I take eltrombopag (Promacta)?

Follow all directions on your prescription label. Your doctor may occasionally change your dose to make sure you get the best results. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Take eltrombopag on an empty stomach, at least 1 hour before or 2 hours after a meal.

Do not take this medication with milk.

Taking eltrombopag long-term can cause harmful effects on your bone marrow that may result in serious blood cell disorders.

To be sure this medication is not causing harmful effects, your blood and liver function will need to be tested often. Your eyes may also need to be checked for signs of cataract formation.

It may take up to 4 weeks of taking this medicine before it is completely effective in preventing bleeding episodes. Keep taking the medication as directed and tell your doctor if you have any bruising or bleeding episodes after 4 weeks of treatment.

Store at room temperature away from moisture and heat. Keep the tablets in their original container, along with the packet or canister of moisture-absorbing preservative.

After you stop taking eltrombopag, your risk of bleeding may be even higher than it was before you started treatment. Be extra careful to avoid cuts or injury for at least 4 weeks after you stop taking eltrombopag. Your blood will need to be tested weekly during this time.

Side Effects Centers

Additional Promacta Information

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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