Precautions

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.

Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant during treatment with this medicine and for 2 months after the last dose. If you think you have become pregnant while using this medicine, tell your doctor right away.

Cetuximab may cause a serious side effect called an infusion reaction. This can be life-threatening and requires immediate medical attention. Tell your doctor or nurse right away if you have a fever, chills, trouble with breathing, lightheadedness, fainting, or chest pain within a few hours after you receive it.

Tell your doctor or nurse right away if you have a cough, difficulty with breathing, or other breathing problems while being treated with this medicine. These may be symptoms of a serious lung problem.

Serious skin reactions can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin, dry skin, grooves or lines in the skin, red skin lesions, severe acne or skin rash, sores or ulcers on the skin, or fever or chills while you are receiving this medicine.

This medicine may make your skin more sensitive to sunlight. Use a sunscreen or sun-blocking lotion when you are outdoors. Wear protective clothing and hats. Avoid sunlamps and tanning beds.

If you plan to have children, talk with your doctor before using this medicine. Some women using this medicine have become infertile (unable to have children).