Drug Interaction Report

Using leflunomide together with certolizumab can increase the risk of side effects that affect your bone marrow function, resulting in low numbers of different types of blood cells. This can make you more likely to develop anemia, bleeding problems, or infections. Because leflunomide can stay in your blood for a prolonged period after the last dose, interactions with other drugs may occur for some time even after you have stopped taking it. Talk to your doctor if you have any questions or concerns. Your doctor may already be aware of the risks, but has determined that this is the best course of treatment for you and has taken appropriate precautions and is monitoring you closely for any potential complications. Contact your doctor immediately if you develop paleness, fatigue, dizziness, lightheadedness, unusual bleeding or bruising, fever, chills, diarrhea, sore throat, muscle aches, shortness of breath, blood in phlegm, weight loss, red or inflamed skin, body sores, and pain or burning during urination. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Leflunomide can be taken with or without food. It is important to take leflunomide regularly to get the most benefit. Discuss with your doctor the use of alcohol while taking leflunomide. Alcohol and leflunomide can both be damaging to the liver.