Generic Iressa (Gefitinib)
Gefitinib is the active ingredient in Iressa®, AstraZeneca's EGFR inhibitor for EGFR-mutation-positive non-small cell lung cancer. Generic gefitinib contains the same active ingredient at the same strength and is produced by licensed pharmaceutical manufacturers. For patients paying out of pocket, the generic can cost significantly less than the originator brand. Used as prescribed by a licensed medical professional.
What is Iressa (Gefitinib)?
Iressa® is the originator brand name for gefitinib, developed by AstraZeneca. It is a targeted oncology therapy prescribed in the management of non-small cell lung cancer whose tumours carry activating EGFR mutations. As a prescription-only medicine, it is used under the supervision of a qualified oncologist, who will confirm that your tumour carries a relevant EGFR mutation before treatment.
How Gefitinib works
Gefitinib belongs to a class of medicines called tyrosine kinase inhibitors. It targets the EGFR protein signal that can drive the growth of certain lung-cancer cells. By blocking this signal, it is used as part of a treatment plan directed by your oncologist. It is intended for tumours that carry specific EGFR mutations, which is why molecular testing is performed first.
Iressa vs generic Gefitinib
Generic gefitinib contains the identical active ingredient at the same 250 mg strength as branded Iressa, produced by the same licensed pharmaceutical manufacturers. The principal difference patients notice is price: because generics do not carry the originator’s research-and-marketing overheads, they are typically priced far lower. Any switch between brand and generic should be discussed with your prescribing doctor.
| Iressa (Brand) | Generic (Gefitinib) | |
|---|---|---|
| Active ingredient | Gefitinib | Gefitinib |
| Strength | 250 mg | 250 mg |
| Dosage form | Film-coated tablet | Film-coated tablet |
| Originator | AstraZeneca | licensed pharmaceutical manufacturer |
| Typical dosing | Once daily | Once daily |
| Prescription required | Yes | Yes |
Who Gefitinib is prescribed for
Gefitinib is prescribed for adults with non-small cell lung cancer whose tumours carry specific EGFR mutations, as confirmed by molecular testing. Your oncologist decides whether it is appropriate based on your diagnosis, mutation status, prior treatments, and overall health.
Gefitinib vs osimertinib and other EGFR inhibitors
Gefitinib is a first-generation EGFR tyrosine kinase inhibitor. Other medicines in the same family include erlotinib (the active ingredient in Tarceva) and the third-generation inhibitor osimertinib (Tagrisso). A key practical difference is that osimertinib was designed to remain active against the T790M resistance mutation, which can develop after first-generation treatment. Which medicine is appropriate depends entirely on your tumour’s mutation profile and treatment history — a decision only your oncologist can make after molecular testing. This page is for cost and access information, not for choosing a therapy.
Dosage & administration
Gefitinib is commonly prescribed as one 250 mg tablet once daily, taken at about the same time each day, with or without food. If a tablet cannot be swallowed whole, the patient leaflet describes how it may be dispersed in water. Your oncologist may pause treatment or adjust your care based on tolerability and any side effects.
Dosage must be determined by a qualified healthcare provider. Do not change your dose or stop treatment without medical advice, and always follow the patient information leaflet supplied with your medicine.
Possible side effects
Reported side effects of gefitinib may include skin rash (often acne-like), diarrhoea, dry skin, and changes in liver function tests. Less commonly, effects on the lungs (such as interstitial lung disease) can occur, which is why your oncologist monitors you and asks you to report new breathlessness, cough, or fever promptly.
This is not a complete list. Read the patient information leaflet for full details and report any concerning or persistent symptoms to your healthcare provider promptly.
Gefitinib price comparison
Originator prices below are indicative and vary by country, dose, and insurance status. Generic pricing is shown on each product page. The aim of this comparison is to illustrate the typical cost gap that drives patients to seek licensed generics.
| Country | Branded Iressa (approx.) | Generic |
|---|---|---|
| United States | ~$7,000+ / month (brand) | Generic — substantially lower |
| United Kingdom | ~£2,000 / month | Generic — substantially lower |
| Australia | ~A$3,000 / month | Generic — substantially lower |
Available generic Gefitinib products
Browse in-stock generic Gefitinib below. Each product page lists strength, manufacturer, and current pricing.
How to order generic Gefitinib
- Choose your strength and pack size on the product page.
- Add to cart and proceed to checkout.
- Upload a valid prescription from your healthcare provider.
- Complete payment securely; your order ships in discreet packaging with tracking.
Shipping & delivery
We ship to 100+ countries with tracked, discreet packaging. Delivery typically takes 5–15 business days depending on destination and customs. Our team can provide tracking and customs documentation where applicable.
Is it legal to import Gefitinib for personal use?
Personal-import regulations differ from country to country. Many countries allow individuals to import a limited supply of prescription medicine for personal use when they hold a valid prescription. It is your responsibility to confirm the rules that apply where you live before ordering. If you are unsure, consult your healthcare provider or local regulator.
Safety information
Gefitinib is a prescription-only medicine used in EGFR-mutation-positive non-small cell lung cancer (NSCLC). As a first-generation EGFR tyrosine kinase inhibitor, it should only be used under the guidance of a qualified healthcare professional. Dosage must be determined by your provider. Tell your doctor about all medicines you take and any existing health conditions. Read the patient information leaflet supplied with your medicine for the full list of precautions, possible side effects, interactions, and storage instructions. Keep all medicines out of reach of children, and inform your doctor if you are pregnant, planning a pregnancy, or breastfeeding.
Why order from OnlineMeds
- Genuine medicines sourced from licensed pharmaceutical manufacturers
- Discreet, tracked worldwide delivery to 100+ countries
- Simple prescription upload at checkout
- Pharmacist support before and after you order
Frequently asked questions
Is generic gefitinib the same as Iressa?
Generic gefitinib contains the same active ingredient at the same 250 mg strength as branded Iressa and is produced by licensed pharmaceutical manufacturers. Discuss any switch with your prescribing doctor.
Do I need a prescription to order gefitinib?
Yes. Gefitinib is a prescription-only medicine. You can upload your prescription at checkout, and our team can assist if you have questions.
How much can I save with generic gefitinib?
Pricing varies by country and pack size, but generic gefitinib is typically priced substantially lower than the originator brand. See the linked product pages for current pricing.
Is it legal to import gefitinib for personal use?
Personal-import rules differ by country. Many countries permit importing a limited supply of prescription medicine for personal use with a valid prescription. Check your local regulations before ordering.
Is the generic manufactured to the same quality standards?
The generic gefitinib we supply is produced by licensed pharmaceutical manufacturers and contains the same active ingredient as the branded medicine.
How long does delivery take?
Delivery times depend on destination, typically within 5–15 business days with tracked, discreet shipping to 100+ countries.
This content is for informational purposes only and does not constitute medical advice. Always consult a licensed healthcare provider before using any medication. Used as prescribed by a licensed medical professional.