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Prescription Required
Astra Zeneca
10 tablet
Gefitinib
Keep in cold place
Delivering To:
Overview
Iressa 250mg Tablet is a member of the class of medications known as "anti-cancer" and is mostly prescribed to treat lung cancer. Gefitinib, an ingredient in Iressa 250mg Tablet, is a member of the class of medications known as "kinase inhibitors." It functions by preventing an abnormal protein from causing malignant cells to proliferate. It prevents the spread of malignant cells in this way. A chemotherapeutic drug called Iressa 250mg is used to treat non-small cell lung cancer (NSCLC). The generic name for this drug is gefitinib. It is an inhibitor of tyrosine kinase with antitumor properties. Iressa is used as a first-line treatment for genetically mutated lung cancer.
Lung Cancer
Treatment of Non-small cell lung cancer
Most side effects of the Iressa 250mg tablet do not require medical attention, as they may disappear as your body adjusts to the medicine. In case these side effects become worse, consult your doctor immediately.
Nausea
Vision complications
Acne
Extreme weakness
Diarrhea
Mouth sores
Dry skin
Loss of appetite
Blisters of skin
Vomiting
Shortness of breath
Dark coloration of urine
Yellowing of skin and eyes
Iressa 250mg tablet is prescribed by the doctor; hence, it is advisable to follow the prescription given as it is taken orally once every day, and it can be taken with or without food.
In case of an overdose of Iressa, contact your doctor or any healthcare provider and seek medical attention immediately.
Iressa 250mg Tablet functions by stopping the working of EGFR tyrosine kinase, which binds to the ATP binding site of the enzyme. EGFR refers to epidermal growth factor receptor and is often overexpressed in cancerous cells, leading to stimulation of anti-apoptotic signals. Additionally, it causes cell proliferation as well. Iressa has antineoplastic activity, thus it stops the growth and spreading of cancerous cells.
Alcohol
unsafe
It is advisable not to consume alcohol while taking this medicine.
Pregnancy
consult your doctor
Do not take Iressa 250mg tablet without consulting the doctor, in case of pregnancy.
Breast Feeding
consult your doctor
Without a doctor's consultation, do not take this medicine if you're breastfeeding.
Driving
danger
It is advisable not to drive or operate heavy machinery, you may feel dizzy as one of the side effects of the medicine.
Kidney
caution
Do not take Iressa 250mg tablet without a doctor's consultation in case of kidney problems.
Liver
caution
Share your medical history with the doctor in case of liver disease before taking this medicine.
It is advisable to avoid missing any doses of Iressa and in case you miss a dose of Gefticip consult your doctor immediately.
Iressa 250mg tablet is an anticancer medication that is primarily used in the treatment of lung cancer.
Iressa tablets are taken orally once every day or as advised by the doctor.
It is advisable to store the Iressa tablets at 20° – 25° C
The doctor decides for how long the treatment with Iressa will continue depending on the condition, stage, and health of the patient.
It is advisable to avoid driving and operating heavy machinery as Iressa causes dizziness as one of the side effects.
An antacid or other drug that lowers stomach acid should not be used two hours before or one hour after taking an Iressa 250mg medication.
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Fukuoka, M., et al. (2025). IDEAL‑1 trial: randomized study of gefitinib 250 mg vs 500 mg daily in pretreated advanced non‑small‑cell lung cancer. Journal of Clinical Oncology, 12(10), 300-500.
Kawashima, J., et al. (2025). Five‑year outcomes with gefitinib induction followed by chemoradiotherapy in EGFR‑mutant stage III non‑small‑cell lung cancer: LOGIK0902/OLCSG0905 phase II study. International Journal of Clinical Oncology, 30(4), 497–503.
Sai, et al. (2025). Long‑term outcomes of neoadjuvant gefitinib in resectable stage II–IIIa non‑small cell lung cancer: a phase II, prospective cohort study. Lung Cancer, 10(2), 400-700.
Wu, Y.-L., et al. (2023). Randomized trial of tepotinib plus gefitinib versus chemotherapy in EGFR‑mutant non‑small‑cell lung cancer with acquired resistance due to MET amplification: INSIGHT final analysis. Clinical Cancer Research, 29(10), 1879–1886.
Astra Zeneca
Written By
Venika Choudhary
Medical Content Writer @ Magicine Pharma
I hold an M.Sc. in Microbiology and have a strong academic foundation in microbial sciences and applied biotechnology. I began my career with extensive hands-on research at CSIR laboratories, focusing on fungal enzyme production, studying fungal diversity in various ecosystems, and developing bio-pesticides as sustainable alternatives to chemical pesticides. This work deepened my understanding of fungal biology, bioactive compounds, and their pharmaceutical and agricultural applications. Transitioning from research, I now work as a medical content writer, where I combine my scientific expertise with a passion for clear and reliable healthcare communication. I apply my research background to create patient-friendly, compliant content for pharmaceutical companies and healthcare platforms, ensuring science is both trustworthy and accessible. Specializing in clear, accurate, and engaging content, I help patients make informed decisions and support pharmaceutical companies in delivering trusted information. Whether writing product descriptions, crafting disease awareness articles, or composing drug information leaflets, I consistently meet regulatory standards and address audience needs, making my content an asset for healthcare brands.
Reviewed By
Dr. Aditya Sarin - MBBS, MD, DrNB - Consultant Medical Oncology
Dr. Aditya Sarin, MBBS, MD, DrNB, is a highly qualified medical oncologist with profound research and clinical expertise, currently working at Sir Ganga Ram Hospital, New Delhi. He is also a member of the European Society of Medical Oncology (ESMO), a non-profit European organization dedicated to eradicating cancer by promoting comprehensive cancer care and advancing medical oncology. He has been honored with several awards, including the International Cancer Foundation scholarship (ESMO congress, 2022) and Young Medical Oncologist of the Year (Times of India, 2024). He is well-known for his breakthrough in oncology. Dr. Sarin is passionate about converting complex health information into a concise and clear form that is understandable to everyone, aiming to create awareness and cancer care among people.