Nucala

Nucala Injection is used as an add‑on treatment for severe eosinophilic asthma, eosinophilic granulomatosis with polyangiitis (a rare disease causing blood vessel inflammation), and hypereosinophilic syndrome (high levels of certain white blood cells). It helps control inflammation and reduce flare‑ups in these long‑term conditions when other treatments are not enough.

No. Nucala Injection is not meant to treat sudden breathing problems or asthma attacks. It is used regularly to help prevent future attacks and keep symptoms under control. Always use your quick‑relief inhaler for sudden breathing issues.

People who have had allergic reactions to mepolizumab or any of its ingredients should not use Nucala Injection. If you have ever experienced swelling, rash, breathing difficulty, or severe dizziness after receiving Nucala Injection, inform your doctor before taking it again.

Serious side effects may include allergic or hypersensitivity reactions such as swelling of the face or tongue, hives, low blood pressure, difficulty breathing, or dizziness. Seek immediate medical help if these occur after receiving this medicine.

Some people using Nucala Injection have developed herpes zoster (shingles). Your doctor may suggest a shingles vaccine before starting treatment. If you notice any new skin rash or blisters, contact your doctor.

If you have a parasitic (worm) infection, it should be treated before starting Nucala Injection. This medicine may reduce your body’s ability to fight certain parasites. If you get a worm infection while on treatment and it does not clear, your doctor may pause the medicine until it resolves.

Do not stop or reduce your steroid medicines suddenly after starting Nucala Injection. Your doctor will guide you if and when it is safe to lower the steroid dose gradually, since stopping too quickly can worsen symptoms or trigger withdrawal effects.

Nucala Injection is approved for children 6 years and older with severe eosinophilic asthma, and for adults up to 75 years and beyond for other conditions. Studies show it works similarly across age groups, though some older adults may be more sensitive to its effects.

Mild pain, redness, or swelling at the injection site is common and usually goes away within a few days. If the area becomes very painful, itchy, or swollen, or if you develop a rash elsewhere, contact your doctor, as it could be an allergic reaction.

Yes. You can usually receive vaccines while using Nucala Injection, but some vaccines, such as live vaccines, may require caution. Always check with your doctor before getting vaccinated, especially if it is a new vaccine or booster.