Iressa

Iressa is used for:

Treating non-small cell lung cancer after other cancer chemotherapy treatments have not been successful. It may also be used for other conditions as determined by your doctor.

Iressa is a cancer chemotherapy agent. It works by blocking a certain protein (an enzyme called tyrosine kinase). This helps to stop the cancer from growing and spreading.

Do NOT use Iressa if:

• you are allergic to any ingredient in Iressa

Contact your doctor or health care provider right away if any of these apply to you.

Before using Iressa :

Some medical conditions may interact with Iressa . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have lung disease (eg, pulmonary fibrosis), heart problems, severe kidney problems, or liver problems
• if you have had a stroke

Some MEDICINES MAY INTERACT with Iressa . Tell your health care provider if you are taking any other medicines, especially any of the following:

• Antacids (eg, sodium bicarbonate, calcium carbonate), histamine H₂-receptor blockers (eg, famotidine), hydantoins (eg, phenytoin), or rifampin because the effectiveness of Iressa may be decreased
• Imidazoles (eg, ketoconazole) because the side effects of Iressa may be increased
• Anticoagulants (eg, warfarin) because the risk of bleeding may be increased
• Vinorelbine because the risk of low white blood cell counts may be increased

This may not be a complete list of all interactions that may occur. Ask your health care provider if Iressa may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.