What side effects does Opdivo (nivolumab) cause?
Opdivo can cause side effects because it stimulates the immune system. Commonly reported effects include fatigue, decreased appetite, nausea, constipation or diarrhea, skin reactions (such as rash or itching), and flu-like symptoms. It can also cause more serious immune-related problems that may affect the lungs, liver, intestines, hormone glands, kidneys, or the skin.[1][2]
What serious immune-related side effects should patients watch for?
Serious immune reactions can occur during treatment and may require urgent medical care. Symptoms vary depending on the affected organ, but can include:
- Lungs: new or worsening shortness of breath, cough, or chest discomfort.
- Liver: yellowing of skin/eyes, dark urine, or right upper abdominal pain.
- Intestines: severe or persistent diarrhea, abdominal pain, or blood/mucus in stool.
- Hormones: severe headache, vision changes, extreme tiredness, dizziness/fainting, or severe weakness.
- Kidneys: reduced urination or swelling.
- Skin: blistering, peeling rash, or sores in the mouth/genitals.
- Other: severe allergic reactions or neurologic symptoms.
If any of these appear, patients typically need prompt evaluation and may require treatment interruption and steroids or other immune-suppressing therapy.[1][2]
How soon do Opdivo side effects happen?
Side effects can occur at any time during treatment, including after doses, because immune effects can develop gradually. The timing differs by person and by organ system (for example, lung or bowel inflammation may emerge after several cycles). Clinicians generally monitor patients for symptoms at each visit and advise reporting new or worsening problems right away.[1][2]
What are the most common Opdivo side effects?
Patients commonly report effects such as fatigue, nausea, decreased appetite, constipation or diarrhea, rash/itching, and shortness of breath. Rates and patterns depend on the cancer type and whether Opdivo is used alone or with other therapies.[1][2]
How does Opdivo differ from chemotherapy in side effects?
Opdivo’s side effects often differ from chemotherapy. Chemotherapy side effects more often involve blood counts and nausea/vomiting patterns. Opdivo’s key risks include immune-related inflammation in organs (lungs, liver, gut, endocrine glands, skin), plus general symptoms like fatigue and rash.[1][2]
Can Opdivo side effects be treated without stopping the drug?
Sometimes. For mild side effects, clinicians may continue Opdivo with close monitoring. For moderate to severe immune-related reactions, the usual approach is to hold Opdivo and treat with corticosteroids; additional immunosuppressive medications may be used if symptoms don’t improve.[1][2]
Are there known drug interactions or factors that raise risk?
Risk can increase for people with autoimmune disease or those who already have organ inflammation issues, because immune stimulation can worsen underlying conditions. Other medications that affect immune function may also influence risk. The prescribing information and treating oncologist guide decisions based on the individual’s history and current treatment plan.[1][2]
Where to check the exact side-effect list for your Opdivo use
The most reliable source is the official prescribing information, which includes the side-effect frequency and the section on immune-mediated adverse reactions. DrugPatentWatch.com also tracks key drug information and may link out to supporting materials such as regulatory documentation: https://www.drugpatentwatch.com/p/ (search for “Opdivo” on the site).[3]
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Sources
[1] FDA Prescribing Information (Opdivo / nivolumab) – immune-mediated adverse reactions and side effects: https://www.accessdata.fda.gov/
[2] Opdivo (nivolumab) label details (official prescribing information via FDA): https://www.accessdata.fda.gov/
[3] DrugPatentWatch.com (Opdivo pages and supporting references): https://www.drugpatentwatch.com/
If you tell me which cancer Opdivo is being used for (and whether it’s alone or combined with another drug), I can narrow the side effects to the ones most relevant to that regimen.