Skip to Content
Looking to save on your medications?  Find out how 


Generic name: durvalumab

What is Imfinzi?

Imfinzi is a prescription medicine used to treat adults with:

  • a type of lung cancer called non-small cell lung cancer (NSCLC). Imfinzi may be used when your NSCLC:
    • has not spread outside your chest
    • cannot be removed by surgery, and
    • has responded or stabilized with initial treatment with chemotherapy that contains platinum, given at the same time as radiation therapy.
  • a type of lung cancer called small cell lung cancer (SCLC). Imfinzi may be used with the chemotherapy medicines etoposide and carboplatin or cisplatin as your first treatment when your SCLC:
    • has spread within your lungs or to other parts of the body, (extensive-stage small cell lung cancer, or ES-SCLC).

It is not known if Imfinzi is safe and effective in children.

What is the most important information I should know about Imfinzi?

Imfinzi is a medicine that may treat certain cancers by working with your immune system.

Imfinzi can cause your immune system to attack normal organs and tissues in any area of your body and can affect the way they work. These problems can sometimes become severe or life-threatening and can lead to death. You can have more than one of these problems at the same time. These problems may happen anytime during treatment or even after your treatment has ended.

Call or see your healthcare provider right away if you develop any new or worsening signs or symptoms, including:

  • Lung problems
    • cough
    • shortness of breath
    • chest pain
  • Intestinal problems
    • diarrhea (loose stools) or more frequent bowel movements than usual
    • stools that are black, tarry, sticky, or have blood or mucus
    • severe stomach-area (abdomen) pain or tenderness
  • Liver problems
    • yellowing of your skin or the whites of your eyes
    • severe nausea or vomiting
    • pain on the right side of your stomach-area (abdomen)
    • dark urine (tea colored)
    • bleeding or bruising more easily than normal
  • Hormone gland problems.
    • headaches that will not go away or unusual headaches
    • eye sensitivity to light
    • eye problems
    • rapid heartbeat
    • increase sweating
    • extreme tiredness
    • weight gain or weight loss
    • feeling more hungry or thirsty than usual
    • fast and deep breathing
    • sweet smell to your breath
    • sweet or metallic taste in your mouth
    • different odor to your urine or sweat
    • urinating more often than usual
    • hair loss
    • feeling cold
    • constipation
    • your voice gets deeper
    • dizziness or fainting
    • changes in mood or behavior, such as decreased sex drive, irritability, or forgetfulness
  • Kidney problems
    • decrease in your amount of urine
    • blood in your urine
    • swelling of your ankles
    • loss of appetite
  • Skin problems
    • rash
    • itching
    • skin blistering or peeling
    • painful sores or ulcers in mouth or nose, throat, or genital area
    • fever or flu-like symptoms
    • swollen lymph nodes
  • Problems can also happen in other organs and tissues. These are not all of the signs and symptoms of immune system problems that can happen with Imfinzi. Call or see your healthcare provider right away for any new or worsening signs or symptoms, which may include:
    • Chest pain, irregular heartbeats, shortness of breath or swelling of ankles
    • Confusion, sleepiness, memory problems, changes in mood or behavior, stiff neck, balance problems, tingling or numbness of the arms or legs
    • Double vision, blurry vision, sensitivity to light, eye pain, changes in eye sight
    • Persistent or severe muscle pain or weakness, muscle cramps
    • Low red blood cells, bruising
  • Infusion reactions that can sometimes be severe or life-threatening. Signs and symptoms of infusion reactions may include:
    • chills or shaking
    • itching or rash
    • flushing
    • shortness of breath or wheezing
    • dizziness
    • feel like passing out
    • fever
    • back or neck pain
  • Complications, including graft-versus-host disease (GVHD), in people who have received a bone marrow (stem cell) transplant that uses donor stem cells (allogeneic).

    These complications can be serious and can lead to death. These complications may happen if you underwent transplantation either before or after being treated with Imfinzi. Your healthcare provider will monitor you for these complications.

    Getting medical treatment right away may help keep these problems from becoming more serious.

    Your healthcare provider will check you for these problems during your treatment with Imfinzi.
    Your healthcare provider may treat you with corticosteroid or hormone replacement medicines.
    Your healthcare provider may also need to delay or completely stop treatment with Imfinzi, if you have severe side effects.

What should I tell my healthcare provider before using Imfinzi?

Before you receive Imfinzi, tell your healthcare provider about all of your medical conditions, including if you:

  • have immune system problems such as Crohn's disease, ulcerative colitis, or lupus
  • have received an organ transplant
  • have received or plan to receive a stem cell transplant that uses donor stem cells (allogeneic)
  • have received radiation treatment to your chest area
  • have a condition that affects your nervous system, such as myasthenia gravis or Guillain-Barré syndrome
  • are pregnant or plan to become pregnant. Imfinzi can harm your unborn baby.
    Females who are able to become pregnant
    • You should use an effective method of birth control during your treatment and for at least 3 months after the last dose of Imfinzi. Talk to your healthcare provider about birth control methods that you can use during this time.
    • Tell your healthcare provider right away if you become pregnant or think you may be pregnant during treatment with Imfinzi.
  • are breastfeeding or plan to breastfeed. It is not known if Imfinzi passes into your breast milk. Do not breastfeed during treatment and for at least 3 months after the last dose of Imfinzi.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

How should I use Imfinzi?

  • Your healthcare provider will give you Imfinzi into your vein through an intravenous (IV) line over 60 minutes.
  • Imfinzi is usually given every 2, 3 or 4 weeks.
  • Your healthcare provider will decide how many treatments you need.
  • Your healthcare provider will test your blood to check you for certain side effects.
  • If you miss any appointments, call your healthcare provider as soon as possible to reschedule your appointment.

What are the possible side effects of Imfinzi?

Imfinzi can cause serious side effects, including:

See "What is the most important information I should know about Imfinzi?"

The most common side effects of Imfinzi in people with NSCLC include:

  • cough
  • feeling tired
  • inflammation in the lungs
  • upper respiratory tract infections
  • shortness of breath
  • rash

The most common side effects of Imfinzi when used with other anticancer medicines in people with ES-SCLC include:

  • nausea
  • hair loss
  • feeling tired or weak

Tell your doctor if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of Imfinzi. Ask your healthcare provider or pharmacist for more information.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

General information about the safe and effective use of Imfinzi

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. If you would like more information about IMFINZI, talk with your healthcare provider. You can ask your healthcare provider for information about Imfinzi that is written for health professionals.

What are the ingredients in Imfinzi?

Active ingredient: durvalumab

Inactive ingredients: L-histidine, L-histidine hydrochloride monohydrate, α,α-trehalose dihydrate, polysorbate 80, water for injection, USP.

For more information, call 1-800-236-9933 or go to WWW.IMFINZI.COM

Source: National Library of Medicine. Last updated July 31, 2021.