Review frequently asked questions
For US residents only.
Whether you’re new to PROMACTA or not, you may have questions. Here are answers to some commonly asked questions. For complete information, refer to the Medication Guide. This does not replace talking to your doctor about your medical condition or treatment. Talk with your doctor about any additional questions you may have.
PROMACTA can cause serious side effects, including:
If you have chronic hepatitis C virus (HCV) and take PROMACTA with interferon and ribavirin treatment, PROMACTA may increase your risk of liver problems. If your health care provider tells you to stop treatment with interferon and ribavirin, you will also need to stop taking PROMACTA.
PROMACTA may increase your risk of liver problems that may be severe and possibly life-threatening. Your health care provider will do blood tests to check your liver function before you start taking PROMACTA and during treatment. Your health care provider may stop your treatment with PROMACTA if you have changes in your liver function blood tests.
Tell your health care provider right away if you have any of these signs and symptoms of liver problems:
For other side effects of PROMACTA, click here.
PROMACTA is a prescription medicine used to treat adults and children 1 year and older with low blood platelet counts due to chronic immune thrombocytopenia (ITP) when other medicines to treat your ITP or surgery to remove the spleen have not worked well enough. PROMACTA is used to try to raise platelet counts in order to lower your risk for bleeding.
PROMACTA is a prescription medicine used to treat low blood platelet counts in people with chronic hepatitis C virus (HCV) infection before and during treatment with interferon. PROMACTA should only be used in people with chronic HCV whose low blood platelet counts keep them from starting or continuing interferon-based therapy. It is not known if PROMACTA is safe and effective when used with other antiviral medicines that are approved to treat chronic HCV.
PROMACTA is a prescription medicine used to treat people with severe aplastic anemia (SAA) in combination with standard immunosuppressive therapy as the first treatment for adults and children 2 years of age and older. PROMACTA is also used to treat your SAA when other medicines have not worked well enough.
PROMACTA is not used to make platelet counts normal.
PROMACTA is for treatment of certain people with low platelet counts caused by chronic ITP, chronic HCV, or SAA, not for a precancerous condition called myelodysplastic syndromes (MDS) or low platelet counts caused by other conditions or diseases.
It is not known if PROMACTA is safe and effective when used with other antiviral medicines that are approved to treat chronic HCV.
It is not known if PROMACTA is safe and effective in children with chronic HCV or previously treated SAA, in children younger than 1 year with ITP, or children younger than 2 years when used in combination with standard immunosuppressive therapy as the first treatment for SAA.
Before you take PROMACTA, tell your health care provider about all of your medical conditions, including if you:
Tell your health care provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. PROMACTA may affect the way certain medicines work. Certain other medicines may affect the way PROMACTA works.
Especially tell your health care provider if you take:
Certain medicines may keep PROMACTA from working correctly. Take PROMACTA at least 2 hours before or 4 hours after taking these products:
Ask your health care provider if you are not sure if your medicine is one that is listed above.
Know the medicines you take. Keep a list of them and show it to your health care provider and pharmacist when you get a new medicine.
Take PROMACTA exactly as your doctor tells you to take it. Do not stop taking PROMACTA without talking with your doctor first. Do not change your dose or schedule for taking PROMACTA unless your doctor tells you to change it. Take PROMACTA on an empty stomach, either 1 hour before or 2 hours after eating food. Take PROMACTA at least 2 hours before or 4 hours after eating dairy products and calcium-fortified juices. If you miss a dose of PROMACTA, wait and take your next scheduled dose. Do not take more than one dose of PROMACTA in one day. If you take too much PROMACTA, you may have a higher risk of serious side effects. Call your doctor right away. Your doctor will check your platelet count during your treatment with PROMACTA and change your dose of PROMACTA as needed. Tell your doctor about any bruising or bleeding that happens while you take and after you stop taking PROMACTA.
Avoid situations and medicines that may increase your risk of bleeding while taking PROMACTA.
PROMACTA may cause serious side effects, including:
The most common side effects when PROMACTA is used in combination with other medicines to treat chronic HCV are:
Laboratory tests may show abnormal changes to the cells in your bone marrow.
Tell your health care provider if you have any side effect that bothers you or does not go away.
Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use PROMACTA for a condition for which it was not prescribed. Do not give PROMACTA to other people, even if they have the same symptoms that you have. It may harm them.
For more information about PROMACTA, go to www.PROMACTA.com or call 1-844-776-6228.
If you miss a dose of PROMACTA, wait and take your next scheduled dose. Do not take more than one dose of PROMACTA in one day.
Take PROMACTA on an empty stomach, either 1 hour before or 2 hours after eating food. Avoid the following for at least 2 hours before or 4 hours after taking PROMACTA: dairy products, calcium-rich or magnesium-rich foods, antacids, multivitamins, supplements, or other products that contain iron, calcium, aluminum, magnesium, selenium, and zinc. These minerals may reduce your body's ability to absorb PROMACTA. Click here for a helpful meal-planning resource.
Your doctor will check your platelet count every week and change your dose of PROMACTA as needed until he/she decides that your dose of PROMACTA can stay the same. Once your doctor decides your dose can stay the same, you will need to have your platelet count checked once a month.
After stopping PROMACTA, your platelet count needs to be monitored weekly for at least 4 weeks to check if your platelet count drops too low.
Before starting PROMACTA, your liver function will be checked through blood tests. During dose adjustments, it will be tested every 2 weeks, transitioning to monthly tests once your dose can stay the same. In some cases, treatment with PROMACTA may need to be stopped due to changes in your liver function tests.