Understanding Side Effects


What are the side effects of PROMACTA?

PROMACTA has an established safety profile

In clinical trials, the 4 most common side effects of PROMACTA® (eltrombopag) in adults with low platelets due to persistent or chronic immune thrombocytopenia (ITP) were:

Nausea 9%

Diarrhea 9%

Upper respiratory tract infection 7%

Vomiting 6%

Other common side effects in these clinical trials included:
  • urinary tract infection
  • pain or swelling (inflammation) in your throat or mouth (oropharyngeal pain and pharyngitis)
  • abnormal liver function tests
  • muscle aches


No matter what the treatment, always let your doctor know if the side effects get to be too much. It's important not to stop or change the way you take PROMACTA without talking to your doctor.


Symptoms may include runny nose, stuffy nose, and sneezing.


For more information about PROMACTA clinical trials, click here.