Aching or pain in the bones and muscles may occur. Taking a non-aspirin pain reliever such as acetaminophen may help relieve pain. Ask your doctor or pharmacist for more details. Redness, swelling, itching, or bruising at the injection site may also occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.
Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor right away if you have any serious side effects, including: pink/bloody urine, easy bleeding/bruising, fever, fast heartbeat, purple/red spots on your skin, back pain.
Get medical help right away if you have any very serious side effects, including: breathing problems (such as shortness of breath, fast breathing), unusual decrease in urination, unusual tiredness, swelling/puffiness of the body.
Rarely, serious (possibly fatal) damage to the spleen may occur. Get medical help right away if you develop stomach/abdominal pain or shoulder pain.
Rarely, this medication may increase the risk of developing a certain bone marrow disorder (myelodysplastic syndrome-MDS) or blood cancer (acute myeloid leukemia-AML) in people with breast or lung cancer who are receiving chemotherapy/radiation. Ask your doctor for more details.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at MedWatch: The FDA Safety Information and Adverse Event Reporting Program.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.