Frequently Asked Questions


Find help for common questions

Whether you are curious about PROMACTA® (eltrombopag) as a chronic ITP treatment or about chronic ITP in general, here is a quick guide with answers to common questions.


You can also watch the video below, featuring practicing hematologist Dr Morey A. Blinder, Professor of Medicine, Division of Hematology, at Washington University in St. Louis, Missouri. Here, Dr Blinder discusses topics such as: what chronic ITP is, what PROMACTA is, how PROMACTA works, what dietary considerations are associated with PROMACTA, and how you should take PROMACTA.

Dr. Blinder
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  • PROMACTA® (eltrombopag) is the only oral prescription platelet booster used to treat adults and children 1 year and older with chronic immune thrombocytopenia (ITP)
  • PROMACTA is used after other ITP treatments (such as steroids or IVIg) have failed to keep your platelets up or have caused too many side effects
  • PROMACTA is the only platelet booster that comes in a once-daily tablet and as an oral suspension

To learn more about PROMACTA, go here.

Chronic immune thrombocytopenia (ITP) is a rare blood disorder. People with chronic ITP have not had enough platelets in their blood for 6 months or more.


Without platelets, it is harder for blood to clot. This can lead to bruising and bleeding. Fortunately, chronic ITP can be managed with treatment, such as PROMACTA® (eltrombopag).


To learn more about chronic ITP, go here.

  • PROMACTA® (eltrombopag) is the only platelet booster that comes in a tablet you can take once a day
  • Platelet boosters work differently from other chronic ITP treatments: Instead of suppressing the immune system, they boost platelet production
  • The safety and efficacy of PROMACTA have been studied in adults for up to 7 years

Click here to learn more about how PROMACTA may help.

PROMACTA® (eltrombopag) is meant to be taken by people who:

  • are 1 year and older, AND
  • have chronic immune thrombocytopenia (ITP that has lasted for 6 months or more), AND
  • for whom other ITP treatments (such as steroids or IVIg) have failed to keep platelets up or have caused too many side effects

Curious if PROMACTA is right for you? Learn tips on how to discuss your chronic ITP treatment options with your doctor.

The side effects of PROMACTA® (eltrombopag) and other platelet boosters are generally mild. The most common side effects of PROMACTA when treating adults with chronic ITP are:

  • nausea
  • diarrhea
  • upper respiratory tract infection (symptoms may include runny nose, stuffy nose, and sneezing)
  • vomiting
  • urinary tract infection
  • pain or swelling (inflammation) in your throat or mouth (oropharyngeal pain and pharyngitis)
  • abnormal liver function tests
  • muscle aches

To learn more about side effects, go here

PROMACTA® (eltrombopag) is a prescription medication, so you will have to work with your doctor to see if it is the right treatment for your chronic ITP. 


Click here for tips on how to talk to your doctor about your chronic ITP treatment options. 


Questions about cost? Click here to learn about the PROMACTA Co-pay Card and other financial assistance.

You should:

  1. Take PROMACTA® (eltrombopag) every day.
  2. Take PROMACTA on an empty stomach, either 1 hour before or 2 hours after eating.
  3. Avoid eating more than 50 mg of calcium 4 hours before and 2 hours after taking PROMACTA. 

Click here to get more tips about taking PROMACTA.

First, check out our PROMACTA Patient Support Program by clicking here.


Other useful resources include:

Furthering the understanding, diagnosis, treatment, and prevention of certain blood and bone disorders 


Health Monitor’s PDSA-reviewed guide for anyone living with ITP


A site run by the American Society of Pediatrics. The chronic condition section might be especially useful for parents who have children with chronic ITP


NHLBI promotes the prevention and treatment of heart, lung, and blood diseases


A helpful resource for ITP education, advocacy, research, and support, the PDSA website can help you find ITP experts or hematology centers of excellence near you


Providing a unified voice for those with rare diseases and their caregivers, seeking to help them so they won’t have to fight that battle alone


Providing medical support and also emotional, lifestyle, and daily ITP guidance to people with ITP