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Imfinzi

Generic Name: durvalumab (dur VAL ue mab)
Brand Names: Imfinzi

Medically reviewed by P. Thornton, DipPharm Last updated on Mar 6, 2019.

What is Imfinzi?

See also: Alunbrig

Imfinzi (durvalumab) is a cancer medicine that works with your immune system to interfere with the growth and spread of cancer cells in the body.

Imfinzi is used to treat non-small cell lung cancer, and cancer of the bladder or urinary tract.

Imfinzi is sometimes given when the cancer has spread to other parts of the body or cannot be removed with surgery, or when other treatments did not work or have stopped working.

Important Information

Imfinzi works by causing your immune system to attack tumor cells. Durvalumab may cause your immune system to attack healthy organs and tissues in your body. This could lead to serious or life-threatening side effects on your lungs, liver, pancreas, kidneys, intestines, thyroid, or adrenal glands.

Call your doctor at once if you have new or unusual symptoms, such as: tiredness, mood changes, headaches, vision problems, muscle weakness, stomach problems, weight changes, skin rash, hair loss, bleeding or bruising, yellowing of your skin or eyes, increased or decreased urination, dark urine, bloody or tarry stools, worsening cough, chest pain, or trouble breathing.

Before taking this medicine

You should not use Imfinzi if you are allergic to durvalumab.

To make sure Imfinzi is safe for you, tell your doctor if you have have an active infection, or if you have ever had:

Imfinzi may harm an unborn baby. Use effective birth control to prevent pregnancy while you are using this medicine and for at least 3 months after your last dose. Tell your doctor if you become pregnant.

Do not breast-feed while using Imfinzi, and for at least 3 months after your last dose.

How is Imfinzi given?

Imfinzi is given as an infusion into a vein, usually once every 2 weeks. A healthcare provider will give you this injection.

This medicine must be given slowly and the infusion can take about 1 hour to complete.

Imfinzi dosing information

Usual Adult Dose for Bladder Cancer:

10 mg/kg IV over 60 minutes every 2 weeks until disease progression or unacceptable toxicity

Uses: For the treatment of patients with locally advanced or metastatic urothelial carcinoma who:
-Have disease progression during or following platinum-containing chemotherapy
-Have disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy

Usual Adult Dose for Non-Small Cell Lung Cancer:

10 mg/kg IV over 60 minutes every 2 weeks until disease progression, unacceptable toxicity, or a maximum of 12 months

Use: For patients with unresectable Stage III non-small cell lung cancer (NSCLC) whose disease has not progressed following concurrent platinum-based chemotherapy and radiation therapy

You may need frequent medical tests.

What happens if I miss a dose?

Call your doctor for instructions if you miss an appointment for your Imfinzi injection.

What happens if I overdose?

Since this medicine is given by a healthcare professional in a medical setting, an overdose is unlikely to occur.

What should I avoid while receiving Imfinzi?

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

Imfinzi side effects

Get emergency medical help if you have signs of an allergic reaction to Imfinzi: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Some side effects may occur during the injection. Tell your caregiver right away if you feel light-headed or itchy, or if you have a fever, chills, neck or back pain, trouble breathing, or flushing (warmth, redness, or tingly feeling).

Durvalumab causes your immune system to attack tumor cells, but it could also attack healthy organs and tissues in your body. This could lead to serious or life-threatening side effects on your lungs, liver, pancreas, kidneys, intestines, thyroid, or adrenal glands.

Call your doctor at once if you have:

  • chest pain, new or worsening cough, feeling short of breath;

  • severe stomach pain, diarrhea, bloody or tarry stools;

  • new or worsening skin rash, itching, or blistering;

  • fever, flu-like symptoms;

  • pain or burning when you urinate;

  • problems in other organs - mood or behavior changes, neck stiffness, confusion, eye pain or redness, vision problems;

  • liver problems - loss of appetite, upper stomach pain, drowsiness, easy bruising or bleeding, dark urine, jaundice (yellowing of the skin or eyes);

  • kidney problems - little or no urination, red or pink urine, swelling in your feet or ankles; or

  • signs of a hormonal disorder - unusual headaches, feeling light-headed or very tired, hoarse or deepened voice, increased hunger or thirst, increased urination, constipation, vomiting, hair loss, feeling cold, weight gain, or weight loss.

Your cancer treatments may be delayed or permanently discontinued if you have certain side effects.

Common Imfinzi side effects may include:

  • nausea, constipation, loss of appetite;

  • tiredness, bone pain, muscle pain;

  • cough, feeling short of breath;

  • painful urination;

  • rash; or

  • swelling in your arms and legs.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Imfinzi?

Other drugs may interact with durvalumab, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Imfinzi only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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