Geftib (Gefitinib) is prescribed to treat lung cancer. It is proven to help to slow down cancerous cells growth and reproduction. It works by blocking a certain protein enzyme called tyrosine kinase.

Most patient who have been prescribed Geftib (Gefitinib) are told to dose once a day, with or without food. Unless otherwise instruct by your physician, tablets should always be swallowed whole and should not be chewed, crushed or dissolved in liquid.

If any side effect remains persistent, turns severe, or worries you, consult your physician as soon as you can. Possible side effects include:

• Diarrhea
• Rashes
• Acne
• Nausea
• Vomiting
• Decreased appetite
• Sore throat
• Unusual weakness

Notify your physician immediately if you notice any of the following side effects which have the potential to be more severe:

• Dehydration
• Unusually bleeding
• Eye pain or irritation
• Difficulty breathing
• Coughing
• Fever
• Swelling of the ankles or feet

Whilst taking Geftib (Gefitinib), do not consume any grapefruit-containing products, including grapefruit juice.