Common Side Effects of Dupixent
Dupixent (dupilumab), used for eczema, asthma, and other conditions, most often causes injection-site reactions like redness, swelling, or itching, affecting up to 20% of patients.[1] Other frequent issues include eye problems such as conjunctivitis (pink eye), dry eyes, or blurred vision (10-25% in eczema trials), upper respiratory infections, sore throat, and joint pain.[1][2]
Serious Side Effects and Risks
Rare but severe effects include hypersensitivity reactions like anaphylaxis, which can occur even after multiple doses—patients should seek immediate help for breathing issues or swelling.[1] Eye inflammation (keratitis) or herpes infections may worsen. In asthma patients, it raises eosinophil counts, potentially leading to vasculitis.[2] Long-term use links to increased helminth infections in endemic areas.[1]
Side Effects by Condition
- Eczema (atopic dermatitis): Highest rates of conjunctivitis (up to 28%) and injection reactions.[1]
- Asthma: Oral herpes (2-4%), flu-like symptoms more common than placebo.[2]
- Chronic rhinosinusitis with nasal polyps: Throat pain and joint pain prominent.[1]
No unique cancer risk shown in trials, but monitoring advised for those with histories.[2]
What Patients Report Most
Real-world data highlights persistent eye irritation as a top complaint, sometimes leading to discontinuation. Joint aches and fatigue also surface frequently in forums, though less in clinical data.[3]
Managing Side Effects
Rotate injection sites and use cold packs for reactions. Eye drops help conjunctivitis; report vision changes promptly. Avoid live vaccines during treatment.[1] Most effects are mild and decrease over time.
[1]: Dupixent Prescribing Information (FDA)
[2]: Dupixent Clinical Trials Summary (Regeneron/Sanofi)
[3]: Drugs.com Dupixent Side Effects