Read the Medication Guide and the Instructions for Use provided by your pharmacist before you start using certolizumab and each time you get a refill. If you have any questions, consult your doctor or pharmacist.

Inject this medication under the skin as directed by your doctor. The injection is given in the stomach or thigh area. The dosage is based on your medical condition and response to treatment. Children's dosage is also based on weight.

If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Take the medication out of the refrigerator 30 minutes before you inject it to allow it to reach room temperature. Do not warm up this medication any other way (for example, do not heat it in the microwave or place it in hot water). Before using, check this product for particles or discoloration. If either is present, do not use the liquid. Before injecting each dose, clean the skin you are going to inject into (the injection site) with rubbing alcohol. Change the injection site each time to lessen injury under the skin. Do not inject into skin that is sore, bruised, red, scaly, or hard. To lessen bruising, do not rub the injection site after a shot. Learn how to store and discard medical supplies safely.

Use this medication regularly to get the most benefit from it. To help you remember, mark the days on a calendar when you need to receive the medication.

Tell your doctor if your condition does not improve or if it gets worse.