See also Warning section.
Bruising, redness, itching, pain, or swelling at the injection site may occur. Nausea, vomiting, headache, fever, decreased appetite, numbness/tingling, or tiredness 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: back pain, unexpected change in walking, symptoms of liver problems (such as nausea/vomiting that doesn't stop, loss of appetite, stomach/abdominal pain, yellowing eyes/skin, dark urine).
Get medical help right away if you have any very serious side effects, including: symptoms of stroke (such as weakness on one side of the body, trouble speaking, sudden vision changes, confusion).
This medication decreases vitamin A levels in your blood. Ask your doctor about taking a vitamin A supplement. Tell your doctor right away if you develop signs of a lack of vitamin A, especially vision changes such as dry eyes, blurred vision, or trouble seeing in dim light (night blindness).
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, muscle/joint pain, flushing/chills, chest pain, trouble swallowing, redness on palms of your hands.
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 www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.