It is very important that your doctor check the progress of you or your child at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Your body's ability to fight infection may be reduced while you are being treated with abatacept. Stop using this medicine and check with your doctor right away if you or your child have any of the following symptoms while using this medicine: fever, chills, cough or hoarseness, flu-like symptoms, lower back or side pain, painful or difficult urination, or unusual tiredness or weakness.
This medicine may cause serious allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Check with your doctor right away if you or your child have a rash; itching; swelling of the face, tongue, and throat; trouble with breathing; lightheadedness or fainting; or chest pain after you receive the medicine.
You or your child will need to have a skin test for tuberculosis before you start using this medicine. Tell your doctor if you or anyone in your home has ever had a positive reaction to a tuberculosis skin test.
While you are being treated with abatacept injection, do not have any immunizations (vaccines) without your doctor's approval. Your child's vaccines need to be current before he or she begins receiving abatacept injection. Be sure to ask your child's doctor if you have any questions about this.
This medicine contains maltose (a type of sugar) which may affect blood sugar levels. If you or your child have diabetes and you notice a change in the results of your blood sugar tests or if you have any questions, check with your doctor. Your doctor may need you to use a different test for your blood sugar levels.
Do not take other medicines for arthritis unless you talk to your doctor. This includes adalimumab (Humira®), anakinra (Kineret®), etanercept (Enbrel®), infliximab (Remicade®), or rituximab (Rituxan®). Using any of these together with this medicine may increase your chance of having serious side effects.