Xdemvy

Prescription treatment for Demodex blepharitis

What is Xdemvy?

Xdemvy (lotilaner ophthalmic solution 0.25%) is an FDA-approved prescription eye drop for Demodex blepharitis, an eyelid condition associated with an overgrowth of Demodex mites. Treating this condition can be one part of a personalized ocular surface care plan.

How do we determine whether it is appropriate?

Demodex blepharitis can cause irritation, itching, redness, and debris around the eyelashes. Characteristic sleeve-like deposits called collarettes form at the lash bases. These findings can overlap with other causes of discomfort, so an eyelid examination is important.

At EnVision Dry Eye Center, Dr. Jason Besecker examines the lashes, eyelid margins, glands, and ocular surface to identify the factors contributing to your symptoms. A prescription is considered when the findings support treating Demodex blepharitis.

Related Question: What Is Anterior Blepharitis?

How does Xdemvy work?

Lotilaner blocks specific nerve signaling channels in mites, causing paralysis and death. Its treatment target is Demodex infestation of the eyelids. Other contributors to dry eye may still need separate care.

What benefits have clinical studies shown?

In the randomized Saturn-1 trial, lotilaner reduced lash collarettes, mite counts, and eyelid redness compared with the vehicle drops used as a control. At day 43, 44.0% of treated patients had no more than two collarettes on the assessed upper eyelid, compared with 7.4% in the control group.

That result describes a specific eyelid finding, rather than the percentage of patients whose dry eye symptoms disappeared. Individual responses vary. Dr. Besecker will reassess your eyelids and symptoms to determine what has improved and whether other factors need attention.

How is Xdemvy used?

The labeled regimen is one drop in each eye twice daily, approximately 12 hours apart, for six weeks. Use it as prescribed and complete the course unless your clinician advises otherwise.

  • Separate Xdemvy from other prescription eye drops by at least five minutes.
  • Remove contact lenses before dosing; wait 15 minutes before reinserting them.
  • Keep the bottle tip from touching your eye, fingers, or other surfaces.
  • If you miss a dose, continue with the next scheduled dose.

Our team can help you fit treatment into your existing eye care routine. Ask before adding eyelid products or changing other prescribed therapy.

What side effects and precautions should I know?

Stinging or burning when the drop is placed in the eye was reported in 10% of patients in controlled studies. Less frequent reactions included styes or chalazia and punctate keratitis, a change affecting the corneal surface. Contact the clinic for persistent irritation, worsening redness, pain, or vision changes.

Tell your prescriber if you are pregnant, planning pregnancy, or breastfeeding. Safety and effectiveness in patients under 18 have not been established. Review the full prescribing information linked below for additional details.

How does it fit with other dry eye care?

Demodex blepharitis may occur alongside meibomian gland dysfunction, tear film instability, or other ocular surface problems. Removing one contributing factor may not resolve every symptom. Your care plan can include other treatments selected for your examination findings.

Follow-up helps us assess your response and discuss ongoing eyelid care. If symptoms return after treatment, request reassessment rather than restarting or extending a prescription on your own.

Related Question: What Is Meibomian Gland Dysfunction?

Related Question: How Does a Dry Eye Doctor Choose the Right Treatment?

Explore: High Resolution Imaging and Eyelid Assessment

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Request a comprehensive dry eye evaluation

Ready to take the next step? Let’s find out what is behind your symptoms. Request an evaluation with EnVision Dry Eye Center in Nampa, serving Boise, Meridian, Caldwell, and the Treasure Valley.

EnVision Dry Eye Center
3752 E Amity Avenue, Suite 103
Nampa, Idaho 83687
(208) 490-8823

Request a Comprehensive Dry Eye Evaluation

Medically reviewed by Jason Besecker, OD, MS
Last updated: October 2026

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Clinical references


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