What is Xdemvy: Uses, Warnings & Interactions

Medically reviewed by Karen BergerPharm.D.
Licensed Pharmacist
Updated May 14, 2025  •  Published Sep 22, 2023
Fact Checked

Xdemvy overview

BRAND NAMES:

  • XDEMVY

Generic Names:

  • The active ingredient of XDEMVY is called lotilaner, but there is no generic version available for sale

Uses:

Therapeutic Classes:

  • XDEMVY is classified as an ectoparasiticide or an anti-parasitic drug

  • More specifically, it is classified as a gamma-aminobutyric acid (GABA)-gated chloride channel inhibitor that works against mites.

Forms:

  • Ophthalmic solution

How it’s taken:

  • An eye drop administered into the eyes

What is Xdemvy used for?

XDEMVY is FDA-approved to treat Demodex blepharitis. Demodex blepharitis is a common eye condition caused by a type of parasite called Demodex mites. Demodex mites are parasites commonly found on human skin. Signs and symptoms of Demodex blepharitis include eyelid redness, irritation, swelling, and misdirected eyelashes as well as the presence of eyelash collarettes, a type of dandruff that includes cells, mite eggs, and mite waste. Demodex blepharitis can cause irritation, eyelash distension or loss, and swelling, which can be uncomfortable. Demodex blepharitis should only be diagnosed and treated by an eye care professional.

What form(s) does Xdemvy come in

  • Ophthalmic solution (eye drop)

    • 0.25% lotilaner

What are common Xdemvy doses?

  • To treat Demodex blepharitis, the adult dose of XDEMVY is one drop in each eye twice a day (about 12 hours apart) for six weeks.

  • XDEMVY is not approved for use in children and adolescents younger than 18 years old. 

Common Xdemvy prescriptions

  • Xdemvy
    10ml of 0.25% bottle

How to take Xdemvy

  • The dose of XDEMVY is one drop in each eye twice a day, about 12 hours apart, for six weeks.

  • Remove contact lenses before putting in XDEMVY eye drops. You can put your contact lenses back in 15 minutes after you put in the eye drops.

  • If you are using other eye medications, wait at least five minutes between using XDEMVY and any other eye medications. 

  • Use caution not to contaminate the tip of the bottle, as doing so could lead to damage to the eye and vision loss.

  • While using XDEMVY, you may experience eye stinging and burning. If side effects are severe, consult your physician for medical advice.

What to do if you miss a dose of Xdemvy

  • If you miss a dose of XDEMVY, skip the missed dose.

  • Resume treatment with the next scheduled dose.

Xdemvy contraindications

Xdemvy warnings

  • Contaminated XDEMVY solution can cause serious eye damage, including vision loss. Take care not to allow the tip of the dispensing container to come into contact with the eye (or around the eye), fingers, or any other surfaces. This will help minimize the chance of contamination. 

  • XDEMVY contains a chemical additive called potassium sorbate that can discolor soft contact lenses. Remove contact lenses before putting XDEMVY eye drops in. Wait at least 15 minutes after putting your eye drops in before you reinsert contact lenses. 

  • Call your healthcare provider right away for advice on the continued use of XDEMVY if:

    • You develop any other eye condition during treatment with XDEMVY (such as trauma to the eye or an eye infection)

    • You are having eye surgery 

    • You have any eye reactions (like pink eye) or eyelid reactions

Xdemvy interactions

  • XDEMVY does not have any listed drug interactions. 

  • However, you should always tell your healthcare provider about all the medications you take, including prescription and over-the-counter drugs, vitamins, and supplements.

  • If you are using any other medications in your eye, wait at least five minutes between using XDEMVY and using any other medications in the eye.

Xdemvy side effects

Common ocular adverse reactions of XDEMVY, occurring in about 10% of patients, include ocular irritation, such as:

  • Eye stinging 

  • Eye burning

Less common side effects, which occur in less than 2% of people who take XDEMVY, include:

  • Chalazion/hordeolum (styes)

  • Punctate keratitis (corneal inflammation and damage)

Sources:

Medically reviewed by Karen BergerPharm.D.
Licensed Pharmacist

After receiving her doctorate from the University of Pittsburgh School of Pharmacy, Karen Berger, Pharm.D., has worked in both chain and independent community pharmacies. She currently works at an independent pharmacy in New Jersey. Dr. Berger enjoys helping patients understand medical conditions and medications—both in person as a pharmacist, and online as a medical writer and reviewer.

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