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Ipilimumab Side Effects

Medically reviewed by Philip Thornton, DipPharm. Last updated on Mar 27, 2025.

Applies to ipilimumab: intravenous solution.

Precautions

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.

Receiving this medicine while you are pregnant can harm your unborn baby. If you are a woman who can get pregnant, your doctor may do tests to make sure you are not pregnant before starting this medicine. Use an effective form of birth control to keep from getting pregnant during treatment and for at least 3 months after your last dose. If you think you have become pregnant while receiving the medicine, tell your doctor right away.

Colitis (inflammation of the colon) may occur with this medicine. Tell your doctor right away if you have stomach pain or tenderness, watery or bloody diarrhea, or a fever after receiving the medicine.

Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, a loss of appetite, nausea, vomiting, or yellow eyes or skin. These could be symptoms of a serious liver problem.

Serious skin reactions (eg, exfoliative dermatitis, Stevens-Johnson syndrome, drug rash with eosinophilia and systemic syndrome (DRESS), or toxic epidermal necrolysis) can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin, chills, cough, diarrhea, itching, joint or muscle pain, red irritated eyes, red skin lesions, often with a purple center, severe acne or skin rash, sore throat, sores or ulcers on the skin, mouth, or lips, swollen glands, unusual bleeding or bruising, or unusual tiredness or weakness while you are receiving this medicine.

Check with your doctor right away if you are having unusual weakness of the arms or legs, or a burning, numbness, tingling, or painful sensation in the arms, hands, legs, or feet. These could be symptoms of a serious nerve problem that can lead to paralysis.

Serious problems with the adrenal, pituitary, or thyroid glands (hormone glands) may occur while you are receiving this medicine. Tell your doctor if you start having continuing or unusual headaches, changes in mood or behavior (eg, being irritable or forgetful), lightheadedness, dizziness, or fainting, unusual sluggishness, or an increase in weight.

Check with your doctor right away if blurred vision, difficulty with reading, eye pain, or any other change in vision occurs while you are receiving this medicine. Your doctor may want your eyes be checked by an ophthalmologist (eye doctor).

This medicine may increase the risk for other problems caused by the immune system, including pneumonitis (inflammation of the lungs), nephritis (kidney problem), or encephalitis (inflammation of the brain). Check with your doctor if you have chest pain, thickening of bronchial secretions, trouble breathing, bloody or cloudy urine, unusual tiredness or weakness, nausea, vomiting, unusual weight gain, swelling of the face, feet, or lower legs, confusion, irritability, headache, seizures, or stiff neck.

This medicine may cause inflammation of the heart muscle (myocardium) called myocarditis. Check with your doctor right away if you have chest pain or discomfort, fever, chills, a fast heartbeat, or trouble breathing.

This medicine may cause infusion-related reactions, which can be life-threatening and require immediate medical attention. Tell your doctor right away if you start to have a fever, chills or shaking, dizziness, trouble breathing, itching or rash, lightheadedness or fainting after receiving this medicine.

This medicine may increase your risk for possible organ transplant rejection. Talk to your doctor about this risk.

Serious side effects of ipilimumab

Along with its needed effects, ipilimumab may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur while taking ipilimumab:

More common side effects

  • bloody, black, or tarry stools
  • bone pain
  • chest pain or tightness
  • constipation
  • cough
  • depressed mood
  • diarrhea
  • dry skin and hair
  • feeling cold
  • fever
  • hair loss
  • heartburn
  • hoarseness or husky voice
  • indigestion
  • itching, skin rash
  • muscle cramps
  • nausea
  • pain in the arms or legs
  • severe stomach pain, cramping, or burning
  • slowed heartbeat
  • sneezing
  • sore throat
  • trouble breathing
  • unusual tiredness or weakness
  • vomiting
  • vomiting of material that looks like coffee grounds, severe and continuing
  • watery or bloody diarrhea

Less common side effects

  • blistering, crusting, irritation, itching, or reddening of the skin
  • bloody or cloudy urine
  • blurred vision or other changes in vision
  • burning, dry, or itching eyes
  • burning, tingling, numbness or pain in the hands, arms, feet, or legs
  • chills
  • clay-colored stools
  • cracked, dry, or scaly skin
  • dark urine
  • darkening of the skin
  • decreased appetite
  • decreased frequency or amount of urine
  • difficulty with breathing, chewing, swallowing, or talking
  • dizziness
  • double vision
  • drooping eyelids
  • drowsiness
  • eye discharge or excessive tearing
  • eye pain or sensitivity to light
  • fainting
  • headache, possibly severe
  • hives or welts
  • loss of appetite
  • mental depression
  • muscle weakness
  • pain, itching, burning, swelling, bleeding, or a lump under the skin where the needle was placed
  • painful or difficult urination
  • redness, pain, or swelling of the eye, eyelid, or inner lining of the eyelid
  • sensation of pins and needles
  • severe tiredness
  • sores, ulcers, or white spots on the lips or in the mouth
  • stabbing pain
  • stomach tenderness
  • swelling of the face, feet, or lower legs
  • swollen glands
  • unusual bleeding or bruising
  • unusual weight gain
  • yellow eyes or skin

Rare side effects

  • anxiety
  • bloating
  • blue or pale skin
  • chest pain, possibly moving to the left arm, neck, or shoulder
  • confusion
  • difficulty with moving
  • fast heartbeat
  • general feeling of discomfort or illness
  • increased thirst
  • lower back or side pain
  • muscle pain, stiffness, or weakness
  • pain or burning in the throat
  • pain, swelling, or redness in the joints
  • pains in the stomach or side, possibly radiating to the back
  • skin irritation or rash, including rash that looks like psoriasis
  • sores, welts, or blisters on the skin
  • stiff neck or back

Incidence not known

  • back, leg, or stomach pains
  • blistering, peeling, or loosening of the skin
  • bleeding gums
  • general body swelling
  • inability to move the arms and legs
  • joint or muscle pain
  • nosebleeds
  • red irritated eyes
  • red skin lesions, often with a purple center
  • throbbing pain

Other side effects of ipilimumab

Some side effects of ipilimumab may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common side effects

  • headache
  • swelling or inflammation of the mouth
  • trouble sleeping
  • weight loss

For healthcare professionals

Applies to ipilimumab: intravenous solution.

General adverse events

The most common adverse reactions reported with this drug as a single agent were fatigue, diarrhea, pruritus, rash, decreased appetite, nausea, vomiting, abdominal pain, cough, headache, pyrexia, insomnia, weight loss, and colitis.

The most common adverse reactions reported with this drug in combination with nivolumab were fatigue, diarrhea, rash, pruritus, nausea, musculoskeletal pain, pyrexia, cough, decreased appetite, vomiting, abdominal pain, dyspnea, upper respiratory tract infection, arthralgia, headache, increased transaminases, hypothyroidism, constipation, decreased weight, and dizziness.

The most common adverse reactions with this drug in combination with nivolumab and platinum-doublet chemotherapy were fatigue, musculoskeletal pain, nausea, diarrhea, rash, decreased appetite, constipation, and pruritus.[Ref]

Cardiovascular

Dermatologic

Endocrine

Gastrointestinal

Genitourinary

Hematologic

Hepatic

In patients who received this drug with nivolumab for hepatocellular carcinoma, virologic breakthrough occurred in 4 of 28 (14%) patients and 2 of 4 (50%) patients with active HBV or HCV at baseline, respectively.

Hypersensitivity

Immunologic

This drug was most commonly associated with immune-related adverse reactions (i.e., adverse reactions resulting from increased/excessive immune activity). Most of these adverse reactions (including severe reactions) resolved after appropriate medical therapy was started or this drug was withdrawn; some immune-related adverse reactions were permanent (e.g., thyroid dysfunction, diabetes mellitus). Life-threatening or fatal immune-related adverse reactions that occurred with this drug (as monotherapy or in combination with nivolumab) have included colitis, intestinal perforation, hepatitis, pneumonitis, hypophysitis, adrenal insufficiency, toxic epidermal necrolysis, myocarditis, encephalitis, myasthenia gravis, and neuropathy.

Local

Metabolic

Musculoskeletal

Nervous system

Ocular

Oncologic

Other

Psychiatric

Renal

Respiratory

See also:

References

1. (2023) "Product Information. Yervoy (ipilimumab)." Bristol-Myers Squibb, SUPPL-129

2. (2021) "Product Information. Yervoy (ipilimumab)." Bristol-Myers Squibb Australia Pty Ltd, V15.0

3. (2022) "Product Information. Yervoy (ipilimumab)." Bristol-Myers Squibb Pharmaceuticals Ltd

Further information

Ipilimumab side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.