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Cimzia
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Last Updated On February 25, 2025

Cimzia Side Effects – Common and Serious Reactions to Watch For

Feb 17, 2025

Chronic inflammatory conditions contribute significantly to global health burdens. According to the Centers for Disease Control and Prevention (CDC), non-communicable diseases (NCDs), such as heart disease, cancer, chronic respiratory diseases, and diabetes, are responsible for 7 out of 10 deaths in the United States.

Cimzia (certolizumab pegol) is a tumor necrosis factor (TNF) blocker commonly prescribed to adults with active Crohn’s disease and other inflammatory conditions. While it effectively reduces inflammation and improves patients’ quality of life, it is essential to be aware of its potential side effects. Understanding both the commo’n and severe reactions can help patients and healthcare providers make informed treatment decisions.

This article explores the side effects of Cimzia, detailing the most frequently reported reactions as well as serious complications that require immediate medical attention.

Key Takeaways

  • Cimzia is effective for treating autoimmune conditions, but some patients may experience side effects during treatment.
  • Common side effects include injection site reactions, fatigue, mild infections, and gastrointestinal discomfort.
  • Severe reactions may involve serious infections, increased cancer risk, neurological complications, and autoimmune responses that require immediate medical attention.
  • Patient screening, regular health monitoring, and education on potential symptoms are crucial for effectively managing side effects.
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Common Side Effects of Cimzia

While Cimzia is effective for treating various autoimmune disorders, some patients may experience common side effects. These can often be managed with appropriate care and attention.

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  • Injection Site Reactions (Redness, Swelling, Pain): Injection site reactions are among the most frequently reported side effects of Cimzia. Some patients may also develop a Cimzia rash, which typically resolves within a few days. 
  • Fatigue and General Malaise as Commonly Reported Patient Experiences: Many patients report fatigue and malaise while taking Cimzia, leading to low energy levels and difficulty performing daily activities. If these symptoms persist or significantly impact your quality of life, speak with your healthcare provider about possible treatment adjustments or lifestyle modifications to help manage fatigue.
  • Increased Risk of Upper Respiratory Infections and Mild Viral Illnesses: Cimzia may increase the risk of upper respiratory infections and mild viral illnesses, such as sore throat, cough, and nasal congestion.
  • Gastrointestinal Discomfort, Including Nausea or Diarrhea: Some individuals experience gastrointestinal discomfort while using Cimzia, including nausea, diarrhea, or abdominal pain. If gastrointestinal issues persist or worsen, consult your healthcare provider.

Serious and Rare Side Effects of Cimzia

Despite effectively treating autoimmune conditions, Cimzia may lead to serious and rare side effects. Awareness of these potential reactions is crucial for timely intervention and optimal health management.

painful stomach
  • Infections: Cimzia can increase the risk of serious infections, including tuberculosis, bacterial, fungal, and viral infections. Symptoms may include fever, chills, muscle aches, and cough.
  • Cancer: There is an increased risk of certain cancers, such as lymphoma and skin cancer, associated with Cimzia use. Regular monitoring is essential.
  • Heart Failure: Cimzia may worsen heart failure in some patients. Symptoms include swelling of ankles or feet, shortness of breath, and weight gain.
  • Neurological Disorders: Rarely, Cimzia can cause neurological issues like multiple sclerosis, presenting with dizziness, numbness, or vision changes.
  • Liver Enzyme Elevation: Elevated liver enzymes can indicate potential liver inflammation. Regular blood tests are recommended to monitor liver function.

If you experience any of these symptoms, contact your healthcare provider promptly. Regular check-ups and open communication with your doctor are vital for the safe and effective treatment using Cimzia.

Clinical Strategies for Managing Cimzia Side Effects

Managing the side effects of Cimzia (certolizumab pegol) requires proactive clinical strategies to ensure patient safety and well-being.

  • Pre-Treatment Screening: Before initiating Cimzia, patients should be screened for tuberculosis (TB) and other infections. A negative TB test is generally required, but additional screening may be necessary for those with a history of infections or compromised immunity.
  • Regular Monitoring: Ongoing monitoring of blood work is essential. A complete blood count (CBC) helps detect changes in blood cells that may indicate issues like infection or anemia. Liver enzyme tests are also important to ensure the medication isn’t causing liver damage.
  • Dose Adjustments: Healthcare providers may recommend adjusting the dose or discontinuing Cimzia for patients at higher risk of severe side effects. Individuals with a history of malignancy, autoimmune disorders, or infections may need more frequent monitoring or dosage adjustments. 

Educating patients about recognizing and reporting severe symptoms is essential for effective healthcare management. When well-informed, patients can promptly identify warning signs, leading to early detection and treatment of potential health issues. 

Conclusion

Cimzia (certolizumab pegol) is a highly effective treatment for autoimmune disorders, offering significant relief for many patients. However, like all medications, it comes with potential side effects—some of which are mild and manageable, while others may require immediate medical attention.

Being informed about these possible reactions and staying in close communication with your healthcare provider is key to ensuring the safe and effective use of Cimzia. Regular monitoring, proactive symptom management, and early intervention can help minimize risks and improve treatment outcomes. If you experience any concerning symptoms, seeking medical advice promptly can help you continue benefiting from Cimzia while safeguarding your health.

FAQs

1. What is Cimzia?

Cimzia (certolizumab pegol) is a prescription medication that blocks Tumor Necrosis Factor (TNF). It treats various autoimmune conditions by suppressing the immune system to reduce inflammation.

2. What conditions does Cimzia treat?

Cimzia is approved for treating rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, non-radiographic axial spondyloarthritis, Crohn’s disease, and plaque psoriasis.

3. How is Cimzia administered?

Cimzia is administered via subcutaneous injection. The dosing schedule varies depending on the condition being treated. 

4. Can Cimzia be used during pregnancy or breastfeeding?

The use of Cimzia during pregnancy or breastfeeding should be discussed with your healthcare provider, as it may not be recommended.

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References

Hacker K. The burden of chronic disease. Mayo Clinic Proceedings Innovations Quality & Outcomes. 2024;8(1):112-119. doi:10.1016/j.mayocpiqo.2023.08.005

Cimzia: Side Effects, Dosage & Uses. Drugs.com. https://www.drugs.com/cimzia.html 

MEDICATION GUIDE CIMZIA ® (CIM-Zee-Uh) (Certolizumab Pegol) Lyophilized Powder or Solution for Subcutaneous Use. Accessed February 17, 2025. https://www.cimzia.com/themes/custom/cimzia/docs/MedicationGuide_2018.pdf