Gefitinib Side Effects and Warnings

What are the precautions when taking this medicine?

• Do not take antacids within 2 hours of this medicine.

• Avoid grapefruit and grapefruit juice.

• Check medicines with healthcare provider. This medicine may not mix well with other medicines.

• Talk with healthcare provider before receiving any vaccinations. Use with this medicine may either increase the risk of serious infection or make the vaccination less effective.

• Use birth control that you can trust to prevent pregnancy while taking this medicine.

What are some possible side effects of this medicine?

• Nausea or vomiting. Small frequent meals, frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.

• Diarrhea.

• Acne.

• Lung damage can rarely occur.

• Eye irritation.

Reasons to call healthcare provider immediately

• If you suspect an overdose, call your local poison control center or emergency department immediately.

• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.

• Difficulty breathing.

• Severe nausea or vomiting.

• Severe diarrhea.

• Significant weight loss.

• Unusual bruising or bleeding.

• Dark urine or yellow skin or eyes.

• Feeling extremely tired or weak.

• Sudden change in vision, eye pain, or irritation.

• Severe swelling.

• Any rash.

• No improvement in condition or feeling worse.