Iressa Overview

Iressa (generic: gefitinib) is a prescription medication used to treat non-small cell lung cancer. Iressa belongs to a group of drugs called epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors. Iressa is thought to work by blocking the action of a certain naturally occurring substance that may be needed to help cancer cells grow and multiply. 

This medication comes in tablet form and is taken once a day, with or without food. 
Common side effects of Iressa include diarrhea, rash, acne, dry skin, and nausea.