Gefitinib

What Is Gefitinib

Gefitinib is a prescription medicine used to treat a type of lung cancer called non-small cell lung cancer (NSCLC). It is mainly used when the cancer has specific genetic changes in cancer cells.

Cancer is a disease where abnormal cells grow and spread in the body in an uncontrolled way.

Gefitinib belongs to a group of medicines called targeted cancer therapy drugs. These medicines work by acting on specific parts of cancer cells instead of affecting all cells in the body.

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An oncologist usually prescribes Gefitinib. An oncologist is a doctor who treats cancer.

This medicine is not a general painkiller or antibiotic. It is a specialized cancer treatment used only under strict medical supervision.

What This Medicine Does in the Body

Gefitinib works by blocking signals that help cancer cells grow and divide.

Cancer cells often have a protein called EGFR (epidermal growth factor receptor) on their surface. This protein sends signals that tell cells to grow.

In some lung cancers, this signal becomes overactive, causing uncontrolled cell growth.

Gefitinib blocks the EGFR signal. When this signal is blocked, cancer cells cannot grow as quickly.

This helps slow down tumor growth and may reduce the spread of cancer in the body.

By targeting only cancer-related signals, Gefitinib helps protect more normal cells compared to traditional chemotherapy.

Doctors may monitor treatment response using scans and regular check-ups.

Uses of Gefitinib / Used For

Doctors prescribe Gefitinib mainly for non-small cell lung cancer (NSCLC) with specific EGFR gene changes.

It is used in patients whose cancer has spread to other parts of the body or cannot be removed by surgery.

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This medicine is usually part of long-term cancer management to slow disease progression and improve quality of life.

It is not used for all types of cancer and is only effective when the EGFR mutation is present.

How Gefitinib Works

Gefitinib works by blocking the EGFR pathway inside cancer cells.

EGFR is a receptor that sends growth signals to cells. In some lung cancers, this receptor becomes overactive and continuously tells cells to divide.

Gefitinib attaches to this receptor and blocks its activity.

When this signal is blocked, cancer cells lose their ability to grow and multiply quickly.

This helps slow tumor progression and may shrink tumors in some patients.

Because it targets a specific pathway, it is called targeted therapy.

Doctors decide eligibility based on genetic testing of cancer cells before starting treatment.

Side Effects of Gefitinib

Like all cancer medicines, Gefitinib may cause side effects, and some may need medical attention.

Common side effects include diarrhea, skin rash, dry skin, acne-like skin reactions, nausea, and loss of appetite.

Some patients may feel tired or weak during treatment.

Skin rash is common because EGFR is also present in normal skin cells.

Rare but serious side effects may include lung inflammation, liver problems, or severe breathing difficulty.

Patients should contact a doctor immediately if they develop worsening cough, fever, yellowing of skin, or breathing problems.

Regular blood tests and scans are usually done during treatment to monitor safety and response.

Medical Disclaimer

This information is for educational purposes only. Gefitinib should only be used under the supervision of an oncologist or qualified healthcare provider. Always follow prescribed instructions and attend regular medical monitoring during treatment.