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Adverse event reporting can be found at the bottom of the page.

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Man drinking hot drink peacefully outside

DUPIXENT®

(dupilumab) Severe Chronic Rhinosinusitis with Nasal Polyps

Safety profile

DUPIXENT is a fully human monoclonal antibody with a generally tolerable safety profilea,1

Adverse reactions reported from DUPIXENT clinical trials including CRSwNP, asthma, and atopic dermatitis patients, and post marketing experience
System classFrequencybAdverse reaction
Blood and lymphatic system disordersCommonEosinophilia
Immune system disorders

Uncommon

 

Angioedemac

 

Rare

Anaphylactic reaction

Serum sickness reaction

Serum sickness-like reaction

Skin and subcutaneous tissue disordersUncommonFacial rashc
Musculoskeletal and connective tissue disordersCommonArthralgiac
General disorders and administration site conditionsCommonInjection site reactions (includes erythema, oedema, pruritus, pain, swelling, and bruising)
Adverse events occurring predominantly in atopic dermatitis clinical trials
Infections and infestationsCommon

Conjunctivitis

Oral herpes

Eye disordersCommonConjunctivitis allergic
Uncommon

Keratitisc,d

Blepharitisd

Eye pruritusd

Dry eyed

RareUlcerative keratitisc,d

DUPIXENT is NOT an immunosuppressant.

The safety profile through Week 52 was consistent with that observed at Week 241,2

In the safety pool (SINUS‑24 and SINUS‑52), the proportion of patients who discontinued treatment due to treatment-emergent adverse events (TEAE) at week 24 was:

  • 3% (n=440) of the DUPIXENT group
  • 5% (n=282) of the placebo group

aThe DUPIXENT safety data presented were predominantly derived from 12 randomised, placebo-controlled trials, including patients with atopic dermatitis, asthma, and chronic rhinosinusitis with nasal polyps (CRSwNP). These studies involved 4206 patients receiving DUPIXENT and 2326 patients receiving placebo during the controlled period.
bCommon (≥1/100 to <1/10); uncommon (≥1/1000 to <1/100); rare (≥1/10 000 to <1/1000).
cFrom post marketing reporting.
dThe frequencies for eye pruritus, blepharitis, and dry eye were common and ulcerative keratitis was uncommon in atopic dermatitis studies.

ABBREVIATIONS
CRSwNP, chronic rhinosinusitis with nasal polyps; INCS, intranasal corticosteroids; MedRA, Medical Dictionary for Regulatory Activities; TEAE, treatment‑emergent adverse events

REFERENCES

  1. DUPIXENT (dupilumab) Summary of Product Characteristics (UK).
  2. Bachert C, et al. Lancet. 2019;394(10209):1638‑50.

MAT-XU-2503883 (v1.0) | January 2026

Adverse events should be reported. Reporting forms and information can be found at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. Adverse events should also be reported to the Sanofi drug safety department on Tel: +44 (0) 800 0902 314. Alternatively, send via email to UK-drugsafety@sanofi.com