Nemolizumab
Brand names: Nemluvio
Nemolizumab is a monoclonal antibody biologic given by subcutaneous injection for conditions driven by intense itch, including prurigo nodularis and moderate-to-severe atopic dermatitis.
Adult dose
Dose independently re-sourced from US FDA prescribing information (openFDA / DailyMed) — cross-check; US labelling may differ from UK — clinician-reviewed. Always confirm against the product SmPC and your local formulary before prescribing.
Contraindications
- Known hypersensitivity to nemolizumab or to any of the excipients
Side effects
- Headache (including migraine)
- Atopic dermatitis / eczema and eczema nummular (reported in prurigo nodularis trials)
- Arthralgia
- Urticaria
- Myalgia
- Hypersensitivity reactions, such as facial angioedema
Clinical monograph
How it works
It binds the interleukin-31 receptor alpha subunit, blocking IL-31 signalling — a key cytokine in the itch and neuroinflammatory pathways of these conditions.
Prescribing in practice
- Assess for active infection before starting and avoid live vaccines during treatment, in keeping with biologic immunomodulators.
- Peripheral oedema and, in atopic dermatitis, occasional early worsening of eczema or asthma-related symptoms have been reported.
- Administer by subcutaneous injection and, in atopic dermatitis, it is generally used alongside topical therapy.
Monitoring
Monitoring is clinical, tracking reduction in itch and skin lesions and reviewing for infection, oedema or respiratory symptoms.
Counselling the patient
- The main benefit is reduction of itch, which can improve sleep and skin healing over time.
- Report signs of infection or any new swelling or breathing symptoms.
- Continue any prescribed topical treatments and emollients alongside the injections.
Evidence & guidelines
Nemolizumab's efficacy in prurigo nodularis and atopic dermatitis was demonstrated in the OLYMPIA and ARCADIA phase 3 trial programmes.
Reference: OLYMPIA 1 & 2 trials (Yosipovitch et al. NEJM 2023); MHRA SPC Nemluvio 2024; Silverberg et al. NEJM 2023 (AD indication); BAD Prurigo Nodularis Guideline; Drug verified in RxNorm (NLM); confirm dosing against the manufacturer SPC (eMC). Verify against your local formulary and current prescribing references before prescribing. The structured dose values shown have been reviewed by a clinician. Monograph status: clinician-reviewed (2026-07-04).
Related
Curated clinical cross-links plus same-class fallbacks.
- SMART2 Risk Score for Recurrent Vascular Events · Cardiovascular Risk
- PCSK9 Inhibitor Eligibility (NICE TA393 / TA394) · Lipid Management
- Immune-Related Adverse Events (irAE) -- GI Toxicity Colitis Grading · Oncology-Related GI
- irAE Hepatitis Grading (CTCAE) · Immunotherapy
- DIPSS — Dynamic International Prognostic Scoring System for Myelofibrosis · Cancer Prognosis
- BALL Score for Relapsed/Refractory CLL · Leukaemia
- Suspicious Pigmented Lesion — Melanoma Pathway · NICE NG14 2015 / BAD
- Cellulitis and Erysipelas · NICE NG141 2019 / CREST
- Psoriasis — Severity Assessment and Step-Up Therapy · NICE NG153 2019 / BAD
- Atopic Eczema — Assessment and Step-Up Therapy · NICE NG95 2023
- Urticaria and Angioedema · BSACI / EAACI Guidelines 2022
- Acne Vulgaris — Grading and Treatment · NICE NG198 2021 / BAD