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How Effective Is Xiidra for Dry Eye According to Clinical Trials?

Xiidra eye drops helped reduce dry eye symptoms in clinical trials, although the amount of relief varied. Across four 12-week trials involving 1,181 patients, people using Xiidra reported less eye dryness than those using comparison drops by Day 42 and Day 84. A separate review of 600 patient records also found fewer reports of eye dryness after treatment began, but this type of review cannot prove that Xiidra alone caused the improvement.

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How Effective Is Xiidra for Dry Eye According to Clinical Trials?

Xiidra eye drops helped reduce dry eye symptoms in clinical trials, although the amount of relief varied. Across four 12-week trials involving 1,181 patients, people using Xiidra reported less eye dryness than those using comparison drops by Day 42 and Day 84. A separate review of 600 patient records also found fewer reports of eye dryness after treatment began, but this type of review cannot prove that Xiidra alone caused the improvement.

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How much can Xiidra eye drops reduce dry eye symptoms?

In the review of patient records, 87.5% of patients had documented eye dryness before starting Xiidra. At the 3-month follow-up, that figure was 8.2%; at the 12-month follow-up, it was 5.0%. These numbers describe symptoms in medical charts, not the percentage of people who will definitely improve. The review also included patients receiving different care in everyday practice, so the results cannot establish that Xiidra alone caused every change.

How soon can Xiidra eye drops start helping?

Some wearers in the clinical trials reported less eye dryness by Day 14, and results favored Xiidra across all four trials by Day 84. The clearest overall comparison in the label is at the later follow-up, when all four trials showed lower reported dryness with Xiidra than with comparison drops. The results do not identify the exact day every person will feel better. A person's own response may differ from the average results seen in the trials.

Did patients continue using Xiidra eye drops over time?

Most patients in the real-world review were still using Xiidra at the 6-month follow-up. Of the 554 patients with information available at that point, 92.4% remained on treatment; among 281 patients with a 12-month follow-up, 84.7% were still using it. These figures show that many patients continued treatment, but they do not prove that every patient found it helpful. The number of patients with available follow-up also differed at each time point.

What side effects did patients report with Xiidra eye drops?

Patients most commonly reported irritation where the drops enter the eye, an unusual taste, and reduced visual clarity. These reactions fall within a broad 5% to 25% range, without an exact rate for each one. Patients also reported blurred vision, eye redness, headache, and watery eyes. Do not read the broad range as meaning that every side effect affects one-quarter of users.

Learn More About Xiidra Eye Drops Effectiveness

Is Xiidra proven to work for everyone with dry eyes?

No. Four controlled clinical trials found that eye dryness results favored Xiidra, but the amount of relief varied. The results cannot guarantee the same response for every person.

What did real-world records show about Xiidra eye drops?

The review of 600 patient records documented eye dryness for 87.5% of patients before treatment and 8.2% at the 3-month follow-up. Because this was a review of medical records rather than a controlled trial, the change does not prove Xiidra alone caused the improvement.

What are the most common side effects of Xiidra eye drops?

The most common side effects include eye irritation after applying the drops, an unusual taste, and reduced visual clarity. Their reported frequency falls within a combined 5% to 25% range, rather than one exact rate for each reaction.

When to See Your Doctor

Arrange an eye exam when dry eye symptoms persist, worsen, or continue to affect daily activities. Talk with the prescriber about side effects or concerns that Xiidra is not helping. Seek emergency medical care for signs of a serious allergic reaction, such as trouble breathing or swelling of the tongue or throat.

References

Clinical Ophthalmology. Real-World Experience with Lifitegrast Ophthalmic Solution (Xiidra?) in the US and Canada: Retrospective Study of Patient Characteristics, Treatment Patterns, and Clinical Effectiveness in 600 Patients with Dry Eye Disease. https://pmc.ncbi.nlm.nih.gov/articles/PMC7953885/. Published March 8, 2021. Accessed October 23, 2026.

Mayo Clinic. Lifitegrast (Ophthalmic Route) Description. https://www.mayoclinic.org/drugs-supplements/lifitegrast-ophthalmic-route/description/drg-20312356. Updated February 1, 2026. Accessed October 23, 2026.

U.S. Food and Drug Administration. Xiidra (lifitegrast ophthalmic solution) Prescribing Information. https://www.accessdata.fda.gov/drugsatfda_docs/label/2023/208073s010lbl.pdf. Published 2023. Accessed October 23, 2026.

WebMD. Xiidra (lifitegrast) - Uses, Side Effects, and More. https://www.webmd.com/drugs/xiidra-lifitegrast. Published 2024. Accessed October 23, 2026.

Xiidra. What Is Xiidra? https://www.xiidra.com/. Publication date not verified. Accessed October 23, 2026.