IRESSA Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (geh-FIT-ih-nib)
IRESSA Oral Uses
Gefitinib is used to treat lung cancer. It works by slowing or stopping the growth of cancer cells. Gefitinib blocks a certain protein (an enzyme called tyrosine kinase).
How To Use IRESSA Oral
Take gefitinib by mouth once daily, with or without food, or as directed.
Medications which reduce or completely block stomach acid (e.g., proton pump inhibitors/PPIs, H2 blockers, antacids) may decrease the absorption of gefitinib. This could decrease the effectiveness of gefitinib. Consult your doctor or pharmacist if you are taking any of these medications.
Avoid eating grapefruit or drinking grapefruit juice while using this medication unless your doctor or pharmacist says you may. Grapefruit may increase the chance of side effects with this medicine. Ask your doctor or pharmacist for more details.
Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same time each day.
