Common Side Effects of Orencia
Orencia (abatacept), used for rheumatoid arthritis, psoriatic arthritis, and juvenile idiopathic arthritis, often causes headaches, upper respiratory tract infections, and nausea. Patients also report sore throat, diarrhea, and back pain.[1][2]
Serious Side Effects and Risks
Serious risks include increased infection susceptibility, such as pneumonia or urinary tract infections, due to immune suppression. Rare but severe effects involve allergic reactions (rash, itching, swelling), low white blood cell counts, and lung issues like interstitial lung disease. Malignancies and hepatitis B reactivation occur in some cases.[1][2]3
How Infections Relate to Orencia Use
Orencia blocks T-cell activation, raising opportunistic infection risks. Avoid live vaccines during treatment; screen for tuberculosis and hepatitis B beforehand.1
Side Effects in Children vs. Adults
Pediatric patients (ages 2+) experience similar issues like infections and headaches, but infusion reactions are more common with IV dosing. Weight-based subcutaneous dosing minimizes some risks.[2]
What Happens If You Miss a Dose or Stop Orencia
Missing doses may worsen arthritis symptoms without immediate side effects, but abrupt stopping increases disease flare risk. No withdrawal syndrome noted, but consult a doctor for restart.[1]
Managing Side Effects During Treatment
Monitor for infections; report fever or persistent cough promptly. Pre-medicate for infusions if reactions occur. Long-term use requires annual TB tests.3
[1]: https://www.orencia.com/
[2]: https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/125057s292lbl.pdf