Xiidra (lifitegrast): what it treats, how to use it, side effects
Last updated September 3, 2026.
Xiidra (lifitegrast) is a prescription eye drop for dry eye disease that targets the inflammation driving it, one drop in each eye twice daily. Where artificial tears add moisture, Xiidra blocks the T-cell activation that keeps the ocular surface inflamed, which is why it works for patients tears never fixed.
What does it treat?
The signs and symptoms of dry eye disease: the burning, grittiness, fluctuating vision, and paradoxical tearing that come from an inflamed, unstable tear film. It treats both how the eye feels and what the doctor can measure on the cornea, with symptom improvement starting in as early as 2 weeks for some patients and building over 6 to 12 weeks.
How do you take it?
One drop per eye twice daily, about 12 hours apart, from single-use containers discarded immediately after use. Contact lenses come out before the drops and go back in 15 minutes later. Technique: tilt head back, pull down the lower lid, drop into the pocket without touching the eye, and press gently at the inner corner for a minute to keep the drug on the eye. Missed dose: instill when remembered unless the next is near; never double up.
Side effects to know
- Common: eye irritation or burning on instillation, blurred vision for a minute or two, and the famous one: an unusual taste in the mouth (dysgeusia) right after dosing, from drainage through the tear duct into the throat. The inner-corner press minimizes it.
- Serious: hypersensitivity reactions are the listed concern: severe eye swelling or redness, or allergic symptoms, mean stopping and calling. Otherwise the side-effect list is remarkably short for a prescription eye drug.
Who should not take it?
Anyone with a prior hypersensitivity to lifitegrast. Contact-lens wearers follow the remove-and-wait-15-minutes rule. It is not for eye infections (the immune modulation makes an active infection a wrong target) and pregnancy data is limited, so that is a clinician conversation. Dry eye from an autoimmune disease like Sjogren's is treated with the same drug but managed by the specialist handling the underlying condition.
When is it an emergency?
Call 911 for facial swelling or trouble breathing after a dose. Sudden vision loss, severe eye pain, or light sensitivity with pain is same-day eye care, drops or no drops. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
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Common questions
How is it different from Restasis?
Both are anti-inflammatory prescription drops for dry eye, by different mechanisms: Restasis is cyclosporine (calcineurin inhibitor), Xiidra blocks LFA-1 to interrupt T-cell activation. Xiidra tends to work faster for symptoms, weeks rather than months. Patients who fail one can be switched to the other; insurance often picks the order.
What is that weird taste after I put the drops in?
Dysgeusia, an unusual metallic or bitter taste, and it is the drug draining through the tear duct into the back of your throat. It is harmless and fades in minutes. Pressing gently on the inner corner of the eye for a minute after instilling keeps more drug on the eye and less in your mouth.
How long until my eyes feel better?
Some patients notice improvement within 2 weeks, but the honest judgment point is 6 to 12 weeks of twice-daily use. Anti-inflammatory eye treatment is a slow rebuild of a damaged surface, and quitting at week 3 is the classic way to miss the benefit.
Can I use it with contact lenses?
Yes, with a routine: lenses out, drops in, wait 15 minutes, lenses back. The preservative-free formulation is gentler than many drops, but the rule stands because any drop can interact with the lens surface.
Do I still need artificial tears?
Usually yes during the build-up weeks, as comfort while the inflammation comes down, dosed at least 15 minutes apart from Xiidra. Many patients taper the tears as symptoms improve. Warm compresses and screen-break habits do the unglamorous half of the work regardless.
Is it a steroid? Is long-term use safe?
Not a steroid, and that is the point: steroid eye drops control inflammation fast but raise eye pressure and cataract risk with long use. Xiidra has no such baggage and is designed for chronic use; dry eye is a chronic condition, so long-term dosing is the norm, with periodic eye-exam check-ins.