Restasis vs. Xiidra: Which Dry Eye Drop Is Best?

Quick answer: Restasis vs. Xiidra comes down to speed, side effects, and cost. Both treat dry eye inflammation. Xiidra may help within two weeks but can cause a metallic taste. Restasis takes three to six months but has a lower-cost generic version.

If you are comparing Restasis vs. Xiidra, you have probably already learned that artificial tears alone are not enough for your dry eye. These are two of the most commonly prescribed drops for chronic dry eye, and while they are often grouped together, they work in very different ways. Here is how they compare so you can have a more informed conversation with your eye doctor.

What Restasis and Xiidra Have in Common

Both Restasis (cyclosporine) and Xiidra (lifitegrast) are FDA-approved prescription eye drops for dry eye disease. They are typically used:

• Twice daily, morning and night
• Long-term, not as a quick fix
• When over-the-counter artificial tears are not enough

Most importantly, both target inflammation, which is a root cause of many types of dry eye. If you want a refresher on why dry eye happens in the first place, start with our guide to what dry eye actually is.

The Biggest Difference: How They Work

Restasis (cyclosporine)

Restasis is an immunomodulator, a type of calcineurin inhibitor. It reduces inflammation in the tear-producing glands, which over time helps your eyes produce more of their own natural tears. Think of it as helping your eyes rebuild their ability to make tears.

Xiidra (lifitegrast)

Xiidra is an LFA-1 antagonist, which works through a different anti-inflammatory pathway. It blocks the interaction between two proteins (LFA-1 and ICAM-1) that drives inflammation on the surface of the eye. Think of it as interrupting the inflammatory signal that causes your symptoms.

How Fast Do Restasis and Xiidra Work?

Onset is one of the most noticeable differences between the two:

• Xiidra: some patients notice relief in as little as 2 weeks.
• Restasis: often takes 3 to 6 months to reach its full effect.

In simple terms, Xiidra tends to bring faster symptom relief, while Restasis delivers slower, more gradual improvement.

Side Effects: What to Expect

Both drops can cause temporary irritation, but their side effect profiles differ.

Common with Xiidra:

• Unusual or metallic taste
• Eye irritation or discomfort
• Blurry vision
• Headache

Common with Restasis:

• Burning when the drop goes in
• Eye redness
• Watery eyes
• A gritty feeling

Both can cause temporary burning, redness, and blurred vision right after use.

Which One Works Better?

There is no clear winner. Both are considered effective for dry eye disease, and there are no direct head-to-head clinical trials comparing them. What matters most is your type of dry eye, how your body responds, and how well you tolerate the side effects.

Cost and Insurance Coverage

Cost is often the deciding factor.

• Restasis: available as a generic (cyclosporine), and often more affordable or better covered by insurance.
• Xiidra: brand name only, so it may cost more depending on your coverage.

How Doctors Typically Choose

Every case is different, but prescribing decisions often come down to a few factors.

Xiidra may be a better fit if:

• You want faster symptom relief
• Your inflammation is mostly on the eye surface
• You are comfortable with possible taste-related side effects

Restasis may be a better fit if:

• You are focused on long-term tear production
• You are comfortable waiting longer for results
• Cost or insurance coverage is a concern

If you recently had refractive surgery, dryness may be part of normal healing rather than chronic dry eye. Our guide to the best eye drops after LASIK explains what to use while you recover and when your surgeon may consider prescription drops.

Can You Use Both?

In some cases, doctors recommend combination or sequential therapy, but this is individualized and should always be guided by your eye care provider.

Don't Skip the Daily Basics

Prescription drops calm inflammation, but they work best alongside good daily habits. Many people with chronic dry eye also have clogged oil glands or blepharitis along the lash line, which a drop alone cannot clean away. Gently washing your lids each day with an eyelid cleanser removes oil, debris, and bacteria so your tear film can stay stable.

If remembering a new step is the hard part, our guide to building a daily eyelid hygiene habit shows how to make it automatic, and our overview of eyelid hygiene for dry eye explains what actually works.

The Bottom Line

Restasis and Xiidra treat the same condition but take different paths to get there:

• Xiidra: faster relief that targets inflammatory signaling
• Restasis: slower relief that supports natural tear production over time

There is no one-size-fits-all answer, and finding the right option often takes some trial and adjustment with your doctor.

At Peeq, we are not medical providers, but we believe patients deserve to understand what they are using and why it works. This article is for general education and is not medical advice. Talk with your eye care provider before starting, stopping, or switching any prescription eye drop.