Iressa (Gefitinib)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Iressa Used For?
Iressa is a medication that contains gefitinib, which is used primarily to treat non-small cell lung cancer, a specific type of lung cancer.
Primary Uses
Iressa is used to treat non-small cell lung cancer.
How It Works
Iressa works by inhibiting the growth and multiplication of cancer cells.
Good to know: Iressa is not addictive.
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How to Take Iressa
Iressa should be taken as directed by your healthcare provider.
Dosage Instructions
The usual adult dosage is one 250 mg tablet taken daily. Swallow the tablet whole with a glass of water; do not chew or crush it.
What If You Miss a Dose?
If you forget to take a dose, take it as soon as you remember, provided it is at least 12 hours before your next scheduled dose. Do not take a double dose.
Important: Never double dose to make up for a missed dose.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- skin reactions such as acne-like rash
- nausea
- diarrhea
- vomiting
- loss of appetite
- dry mouth
- hair loss
- unusual tiredness
- eye problems
- increased bleeding
- burning sensations during urination
Seek immediate medical attention if you experience:
- severe skin reactions
- dehydration from severe diarrhea or vomiting
- serious breathlessness
- unexpected bleeding
- new eye problems
- allergic reactions
- inflammation of the liver
- inflammation of the pancreas
- gastrointestinal perforation
- inflammation of blood vessels in the skin
Important Warnings
There are several important warnings to consider before taking Iressa.
Who Should Not Take Iressa
Do not take Iressa if you are allergic to gefitinib or any of its ingredients.
Medical Conditions to Discuss
Discuss any history of eye problems, lung issues, or liver problems with your doctor.
Pregnancy and Breastfeeding
Iressa should not be taken during pregnancy as it may harm the baby. It is also not recommended for breastfeeding mothers as it can pass into breast milk.
Drug Interactions
Certain medications can interact with Iressa and affect its effectiveness.
- itraconazole
- ketoconazole
- metoprolol
- rifampicin
- warfarin
- phenytoin
- carbamazepine
- barbiturates
- St John's Wort
- vinorelbine
- antacids
- H2 antagonists
- proton pump inhibitors
Alcohol & Driving
Be cautious with alcohol consumption and operating vehicles or machinery while on Iressa.
Alcohol
Consult your doctor regarding alcohol consumption while taking Iressa.
Driving and Operating Machinery
Be careful when driving or using machinery until you know how Iressa affects you.
Storage
Store Iressa in a cool, dry place below 30°C, and keep it in the blister foil until it's time to take it.
Overdose Information
If you suspect an overdose of Iressa, seek immediate medical attention, even if you do not feel any discomfort.
Frequently Asked Questions
The time it takes for Iressa to work can vary by individual; consult your doctor for specific expectations.
Iressa can be taken with or without food.
No, Iressa is not considered addictive.
Do not stop taking Iressa suddenly without consulting your doctor.
Consult your doctor regarding alcohol consumption while on Iressa.
Weight changes may occur; discuss any concerns with your doctor.
Elderly patients should discuss their health conditions with their doctor before taking Iressa.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.