Ebglyss Side Effects: What You Need to Know

Starting a new medication always comes with questions — especially when it's a biologic injection. If you've been prescribed Ebglyss (lebrikizumab-lbkz) for moderate-to-severe atopic dermatitis, here's what to expect in terms of side effects and when you should contact your doctor.

What Is Ebglyss?

Ebglyss is a biologic medication made by Eli Lilly. It works by blocking interleukin-13 (IL-13), a protein that drives the inflammation, itching, and skin barrier problems behind eczema. It's given as a subcutaneous injection — first every two weeks during loading, then every four weeks for maintenance. For a deeper dive, see our guide on what Ebglyss is and how it's used.

Common Side Effects

Most people who take Ebglyss tolerate it well. The most frequently reported side effects include:

• Injection site reactions — Pain, swelling, or redness at the injection site. These are usually mild and go away within a day or two.
• Conjunctivitis (pink eye) — This is one of the more notable side effects of Ebglyss. Some patients develop eye redness, irritation, or tearing.
• Allergic conjunctivitis — Eye symptoms related to allergic inflammation.
• Dry eye — A feeling of dryness or grittiness in the eyes.
• Eye itching (pruritus) — Itching around or in the eyes.

Eye-related side effects are something Ebglyss shares with other IL-13 inhibitors. If you notice persistent eye discomfort, let your doctor know — they may refer you to an ophthalmologist.

Serious Side Effects

Serious side effects are less common but important to be aware of:

• Severe allergic reactions — Signs include difficulty breathing, swelling of the face, lips, tongue, or throat (angioedema), hives, or feeling faint. Seek emergency medical care immediately if this happens.
• Eye problems (keratitis) — Beyond conjunctivitis, some patients may develop keratitis (inflammation of the cornea), which can cause eye pain and blurred vision. Report any vision changes to your doctor right away.
• Herpes zoster (shingles) — There have been reports of shingles in patients taking Ebglyss. If you develop a painful, blistering rash, contact your doctor.
• Parasitic infections — Ebglyss may affect your body's ability to fight certain parasitic (helminth) infections. Tell your doctor if you're traveling to areas where parasitic infections are common.

Side Effects in Specific Populations

Some groups should be especially mindful:

• Pregnant or planning pregnancy — There's limited data on Ebglyss use during pregnancy. Animal studies didn't show harm, but discuss the risks and benefits with your doctor.
• Breastfeeding — It's unknown whether Ebglyss passes into breast milk. Talk to your doctor before breastfeeding while on this medication.
• Adolescents (12+) — Ebglyss is approved for patients 12 and older weighing at least 40 kg. Side effects in adolescents are similar to those in adults.
• Vaccines — Avoid live vaccines while taking Ebglyss. Make sure your vaccinations are up to date before starting treatment.

How to Manage Side Effects

Here are some practical tips:

• Injection site reactions: Rotate injection sites between your thigh, abdomen, and upper arm. Let the medication reach room temperature (about 45 minutes) before injecting.
• Eye symptoms: Use preservative-free artificial tears for dryness. If symptoms persist or worsen, see an eye doctor.
• Track your symptoms: Keep a simple log of any side effects, including when they start and how long they last. This helps your doctor make informed decisions about your treatment.
• Don't stop without asking: If you're experiencing side effects, talk to your doctor before stopping Ebglyss. They may have solutions or adjustments.

For more on how Ebglyss works in your body, check out our mechanism of action guide.

Final Thoughts

Most Ebglyss side effects are mild and manageable. Eye-related symptoms are the most distinctive — if you notice any changes in your vision or eye comfort, don't ignore them. Stay in regular contact with your dermatologist, and report anything unusual promptly.

Looking for Ebglyss? Visit medfinder.com to check availability near you.