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  • NUCALA also treats
    • Severe Eosinophilic Asthma
    • Eosinophilic Granulomatosis
      with Polyangiitis
  • Prescribing Information
    • Prescribing Information
    • Patient Information
    • Visit NZ HCP site
    • NUCALA also treats:
    • Severe Eosinophilic Asthma
    • Eosinophilic Granulomatosis
      with Polyangiitis
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  • What are Nasal Polyps?
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    • How does NUCALA Work?
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Home | Nucala

NUCALA is indicated as an add-on treatment in adult patients (18 years and above) with severe chronic rhinosinusitis with nasal polyps (CRSwNP) with an inadequate response to intranasal corticosteroids

Home | NUCALA can reduce

Size of nasal polyps, Nasal congestion, Need for repeat surgery

Home | Ask your doctor about NUCALA today

Ask your doctor about NUCALA today.

Home | Nasal polyps returned after surgery?

If your nasal polyp symptoms have returned after surgery, find out why they may come back.

Home | Why NUCALA?

See how NUCALA can help treat CRSwNP.

Home | The NUCALA pre-filled pen

Curious about taking your medication at home? See your options.

What are Nasal Polyps?

Nasal polyps are growths that form in your nasal passages or sinuses.

What are Nasal Polyps? | Understanding nasal polyps

Nasal polyps are growths that form in your nasal passages or sinuses. Your doctor may refer to your condition as nasal polyps or as chronic rhinosinusitis with nasal polyps (CRSwNP). Nasal polyp symptoms can include nasal congestion, nasal discharge, mucus in the throat, loss of smell, and facial pressure

What are Nasal Polyps? | Eosinophils play a role in nasal polyps

When you have nasal polyps (CRSwNP), there is typically inflammation in your nasal passages. Eosinophils [ee-uh-sin-uh-fils], a type of white blood cell, play an important role in this inflammatory process. Despite surgical procedures, nasal polyps can come back

What are Nasal Polyps? | What's the next step?

Tell your doctor if you've had surgery but your nasal polyp symptoms have come back. Tell your doctor everything you're doing to manage your nasal polyps, and if your symptoms are continuing or getting worse. Talk to your doctor if your nasal polyp symptoms interfere with your daily life - like disrupting your sleep, causing fatigue, or impacting how you feel emotionally.

About NUCALA | Why NUCALA

NUCALA is indicated as an add-on treatment in adult patients (18 years and above) with severe chronic rhinosinusitis with nasal polyps (CRSwNP) with an inadequate response to intranasal corticosteroids

About NUCALA | Why NUCALA | NUCALA can reduce

Size of nasal polyps, Nasal congestion, Need for repeat surgery.

About NUCALA | Why NUCALA | In a clinical study, people on NUCALA* also experienced: Improved quality of life

After taking NUCALA, people reported improved quality of life,† including nasal symptoms, ear and facial symptoms, fatigue, sleep, and overall emotional impact

About NUCALA | Why NUCALA | In a clinical study, people on NUCALA* also experienced: Symptom improvement

NUCALA improved nasal polyp symptoms like nasal blockage, runny nose, post-nasal discharge, and loss of smell

About NUCALA | Why NUCALA | In a clinical study, people on NUCALA* also experienced: Steroid reduction

NUCALA reduced the need for steroids

About NUCALA | Why NUCALA | Common questions about NUCALA | What is NUCALA?

NUCALA is a biologic; it's not a steroid. It's an injection you get every 4 weeks. When NUCALA is added to your current treatment plan, it can help reduce your symptoms of CRSwNP (like nasal congestion, nasal discharge, mucus in the throat, and loss of smell) and helps prevent the need for surgery. NUCALA helps reduce the size of your nasal polyps and the use of steroids*.

About NUCALA | Why NUCALA | Common questions about NUCALA | What else should you know about NUCALA

Eosinophils are a normal part of your immune system, but in higher numbers, they can cause inflammation6. NUCALA helps reduce eosinophils in the blood, so it treats a source of inflammation3. Inflammation can play a role in CRSwNP.

About NUCALA | Why NUCALA | Common questions about NUCALA | Why would your doctor recommend NUCALA?

Your current treatment may not be controlling your symptoms and not addressing an underlying cause of your nasal polyps: eosinophils.

About NUCALA | Why NUCALA | Common questions about NUCALA | What are the next steps?

Nasal polyps affect people differently, so it's important to talk to your doctor about all of your symptoms.

About NUCALA | How does NUCALA work

NUCALA targets eosinophils, but what exactly does that mean?

About NUCALA | How does NUCALA work | What are eosinophils?

Eosinophils [ee-uh-sin-uh-fils] are white blood cells that are a normal part of the body's immune system

About NUCALA | How does NUCALA work | How do eosinophils play a role in nasal polyps

When you have CRSwNP there is inflammation in your nasal passages. Eosinophils, a type of white blood cell, generally play an important role in this inflammation. Despite surgical procedures, nasal polyps can come back.

About NUCALA | How does NUCALA work | How can NUCALA help

By reducing the number of eosinophils in your blood, Nucala may reduce the size of your nasal polyps and their associated symptoms. Nucala may also be an alternative to surgery. If you are taking oral or injectable steroids, Nucala may also help reduce the need for steroids to control your CRSwNP

About NUCALA | How does NUCALA work | See how NUCALA targets eosinophils to help treat nasal polyps

NUCALA Mechanism of action in CRSwNP

About NUCALA | How does NUCALA work | What to expect during your first NUCALA treatment

At the medical centre: If you want to receive your NUCALA injections from your doctor, you can have NUCALA administered at the medical centre.

About NUCALA | How does NUCALA work | What to expect during your first NUCALA treatment

At home on your time: NUCALA can also be taken at home with the prefilled pen. Your doctor will provide information on how to properly inject at home.

Taking NUCALA | NUCALA Pre-filled pen

NUCALA pre-filled pen is a 4 weekly injection as an add-on treatment in adult patients (18 years and above) with severe chronic rhinosinusitis with nasal polyps (CRSwNP) with an inadequate response to intranasal corticosteroids1.

Taking NUCALA | Designed with you in mind

Don't like needles? With the NUCALA pre-filled pen, you don't have to see the needle.

Taking NUCALA | At-home convenience

After you learn how to properly self-inject from your doctor, you can do it on your own in the comfort of your own home with the NUCALA pre-filled pen.

Taking NUCALA | Self-inject with confidence

Once you and your specialist decide that the NUCALA Pre-filled pen is right for you, you will be given information on how to properly inject and how to monitor for allergic reactions. Sometimes, serious allergic reactions, including anaphylaxis, can occur hours or days later.

Taking NUCALA | How to inject NUCALA at home

Instruction for injecting

Taking NUCALA | Pre-filled pen frequently asked questions | FAQs

Pre-filled pen frequently asked questions

Risks and side effects

Risks and side effects

Risks and side effects | Safety information about NUCALA

NUCALA is used as an add-on treatment in adult patients (18 years and above) with severe chronic rhinosinusitis with nasal polyps (CRSwNP) with an inadequate response to intranasal corticosteroids.
NUCALA may reduce the size of your nasal polyps and their associated symptoms. NUCALA may also be an alternative option to surgery. If you are taking systemic steroids, NUCALA may also help reduce the need for steroids to control your CRSwNP

Risks and side effects | Please review this safety information | Who should not use NUCALA?

Do not use NUCALA if you are allergic to mepolizumab or any of the ingredients in NUCALA (see “What are the ingredients in NUCALA?” below).
It is not known if NUCALA for CRSwNP is well-tolerated and effective in children under 18 years of age.

Risks and side effects | Before receiving NUCALA, tell your healthcare provider about all of your medical conditions, including if you:

are taking oral or inhaled corticosteroid medicines. Do not stop taking your corticosteroid medicines unless instructed by your healthcare provider. This may cause other symptoms that were controlled by the corticosteroid medicine to come back

Risks and side effects | What are the possible side effects of NUCALA?

Allergic (hypersensitivity) reactions, including anaphylaxis. Serious allergic reactions can happen after you get your NUCALA injection. Allergic reactions can sometimes happen hours or days after you get a dose of NUCALA.
Herpes zoster infections that can cause shingles have happened in people who receive NUCALA.

Risks and side effects | The most common side effects of NUCALA

The most common side effects of NUCALA include: headache, injection site reactions (pain, redness, swelling, itching, or a burning feeling at the injection site), back pain, and tiredness (fatigue). Mouth/throat pain and joint pain have been reported with CRSwNP.

Risks and side effects | What are the ingredients in NUCALA?

Active ingredient: mepolizumab.
Inactive ingredients: citric acid monohydrate, EDTA disodium dihydrate, polysorbate 80, sodium phosphate dibasic heptahydrate, and sucrose.

Insurance Information for NUCALA

Get information about NUCALA coverage, cost and assistance

Insurance Information for NUCALA | Understanding your insurance

NUCALA is not currently funded for CRSwNP in New Zealand. Patients with medical insurance should contact their insurer directly to understand whether NUCALA is covered within existing policies.

Insurance Information for NUCALA | Who can access funded NUCALA in New Zealand?

NUCALA is fully funded for severe eosinophilic asthma. Special Authority criteria apply. Discuss this with your doctor for further advice.

Insurance Information for NUCALA | What is severe eosinophilic asthma?

Curious about how NUCALA can help treat severe eosinophilic asthma?

Resources

Resources

Resources | Doctor Discussion Guide

Doctor Discussion Guide

Resources | Starter Kit

Starter Kit

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Ready to talk to your doctor?

Download the doctor discussion guide to keep the conversation on track.
Important Safety Information:

Do not use NUCALA if you are allergic (hypersensitive) to mepolizumab or any of the ingredients in NUCALA1.

Do not use to treat sudden breathing problems1.

The most common side effects of NUCALA are headache, injection site reactions (pain, redness, swelling, itching, or a burning feeling at the injection site), back pain, and nasal pressure1.

Tell your doctor or get emergency help right away if you think you are having an allergic reaction to NUCALA2.

Any information provided on this website should be discussed with a healthcare professional and does not replace a healthcare professional's advice.

References:
  1. GlaxoSmithKline New Zealand. Nucala Data Sheet. GSK NZ; 2024. Available at https://www.medsafe.govt.nz/profs/Datasheet (Last Accessed on Mar 2025)
  2. GlaxoSmithKline New Zealand. Nucala Consumer Medicine Information. GSK NZ; 2023. Available at https://www.medsafe.govt.nz/Consumers/CMI (Last Accessed on Mar 2025)
  3. Han JK, Bachert C, Fokkens W et al. Mepolizumab for chronic rhinosinusitis with nasal polyps (SYNAPSE): a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Respir Med. 2021; published online April 16.
  4. Bernstein D, Pavord ID, Chapman KR et al. Usability of mepolizumab single-use prefilled autoinjector for patient self-administration. J Asthma 2019;28:1-12
  5. Kennedy JL. Sino-nasal outcome test (SNOT-22): a predictor of postsurgical improvement in patients with chronic sinusitis. Ann Allergy Asthma Immunol. 2013 Oct;111(4):246-251, E-supplement
  6. www.webmd.com/asthma/eosinophil-count-facts (Last Accessed on Mar 2025)
Nucala (mepolizumab 100 mg) is a Prescription Medicine, available as a 100 mg/mL pre-filled pen (auto-injector). Each pre-filled pen delivers 100 mg mepolizumab in 1 mL. Nucala is used as an add-on treatment for; severe eosinophilic asthma in patients 12 years and over, severe chronic rhinosinusitis with nasal polyps (CRSwNP) with an inadequate response to intranasal corticosteroids in adult patients 18 years and older, relapsing or refractory Eosinophilic Granulomatosis with Polyangiitis (EGPA) in adult patients aged 18 years and over, and in adult patients with inadequately controlled hypereosinophilic syndrome (HES) without an identifiable non-haematologic secondary cause. Nucala is given by injection under your skin (subcutaneous). Nucala is fully funded for severe eosinophilic asthma and EGPA only; Special Authority criteria apply. Use strictly as directed. Nucala has risks and benefits. Do not stop taking your other asthma medications including inhaled and /or oral steroid asthma medications. Tell your doctor if: you have a parasitic (helminth) infection; you are taking prescription and over-the-counter medicines, vitamins, and herbal supplements; you are pregnant or plan to become pregnant; you are breastfeeding or plan to breastfeed. Nucala does not treat acute asthma symptoms, such as sudden asthma attack. Tell your healthcare professional or get emergency help immediately if you have any of the following symptoms of an allergic reaction: swelling of your face, mouth, and tongue, breathing problems, fainting, dizziness, feeling light-headed (low blood pressure), rash or hives. Side effects: headache, injection site reactions (pain, redness, swelling, itching, or a burning feeling at the injection site), back pain, and fatigue. Serious side effects may include allergic (hypersensitivity) reactions, including anaphylaxis. Serious allergic reactions can happen after you get your injection of Nucala. Allergic reactions can sometimes happen hours or days after you get a dose of Nucala. Herpes zoster infections that can cause shingles have happened in people who received Nucala. If symptoms continue or you have side effects, see your doctor, pharmacist or health care professional. For more information, see Nucala Consumer Medicine Information at www.medsafe.govt.nz. Ask your doctor if Nucala is right for you. Normal doctor's charges apply.

This website is intended for residents of New Zealand only.

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Trademarks are owned by or licensed to the GSK group of companies. ©2025 GSK group of companies or its licensor. Marketed by GlaxoSmithKline NZ Limited, Auckland.

Adverse events involving GlaxoSmithKline products should be reported to GSK Medical Information on 0800 808 500.

TAPS NP20280 PM-NZ-MPL-WCNT-230010 Date of Approval 03 2025 Date of Expiry 03 2027.