What is Netarsudil: Uses, Dosage, Side Effects and More

Netarsudil is a prescription eye drop medication that helps lower the pressure inside your eyes. It's specifically designed for people with glaucoma or high eye pressure (ocular hypertension), conditions that can damage your vision if left untreated.

This medication works differently from many other glaucoma treatments, offering a newer approach to protecting your eyesight. Understanding how it works and what to expect can help you feel more confident about your treatment plan.

What is Netarsudil?

Netarsudil is a ROCK inhibitor eye drop that reduces pressure in your eye by improving how fluid drains out. Think of it as helping your eye's natural drainage system work more efficiently, like clearing a slightly clogged drain.

The medication was approved by the FDA in 2017 as a once-daily treatment option. It belongs to a newer class of glaucoma medications, which means it offers an alternative for people who haven't responded well to traditional treatments or need additional pressure reduction.

You'll find it available only by prescription, typically in small bottles designed for precise dosing. The clear liquid is specially formulated to be gentle on your eye while effectively lowering pressure.

What is Netarsudil Used For?

Netarsudil is primarily used to treat open-angle glaucoma and ocular hypertension in adults. These conditions occur when pressure builds up inside your eye, potentially damaging the optic nerve that connects your eye to your brain.

Open-angle glaucoma is the most common type of glaucoma, often developing slowly without noticeable symptoms at first. The increased pressure can gradually damage your peripheral vision, which is why early treatment is so important for preserving your sight.

Ocular hypertension means your eye pressure is higher than normal but hasn't yet caused detectable damage to your optic nerve. Your doctor may prescribe netarsudil to prevent this condition from progressing to glaucoma.

Sometimes, your doctor might recommend netarsudil as an add-on treatment if other eye drops aren't lowering your pressure enough. It can work alongside other glaucoma medications to provide better pressure control.

How Does Netarsudil Work?

Netarsudil works by targeting something called ROCK proteins in your eye's drainage system. These proteins can make the drainage pathways tighter, reducing how well fluid flows out of your eye.

By blocking these ROCK proteins, netarsudil helps relax and open up the drainage channels. This allows the natural fluid in your eye (called aqueous humor) to flow out more easily, reducing the pressure buildup.

The medication also affects the tissue that lines these drainage pathways, making them more permeable. This dual action helps create a more efficient drainage system in your eye.

Most people notice pressure reduction within a few hours of using the drops, with the full effect typically seen within a few weeks of regular use. The medication is considered moderately strong, providing significant pressure reduction for many patients.

How Should I Take Netarsudil?

Netarsudil is typically used once daily in the evening, with one drop in each affected eye. Taking it at bedtime helps minimize some side effects and fits well with most people's daily routines.

Before applying the drops, wash your hands thoroughly and make sure the dropper tip doesn't touch your eye or any other surface. Tilt your head back slightly, pull down your lower eyelid to create a small pocket, and gently squeeze one drop into this space.

After applying the drop, close your eye gently and press lightly on the inner corner near your nose for about one minute. This helps prevent the medication from draining into your tear duct and reduces the chance of side effects.

If you use other eye drops, wait at least 5 minutes between different medications. This prevents them from washing each other out and ensures each medication can work effectively.

You don't need to take netarsudil with food or avoid eating before or after using it, since it's applied directly to your eye rather than taken by mouth.

How Long Should I Take Netarsudil For?

Netarsudil is typically a long-term treatment that you'll need to continue as long as your doctor recommends. Glaucoma and ocular hypertension are chronic conditions that require ongoing management to prevent vision loss.

Most people need to use netarsudil indefinitely to maintain healthy eye pressure. Stopping the medication usually causes your eye pressure to return to previous levels within a few days or weeks.

Your doctor will monitor your eye pressure regularly, usually every few months initially, then less frequently once your pressure stabilizes. They may adjust your treatment plan based on how well the medication is working and any side effects you experience.

Some people may be able to switch to a different medication or adjust their dosing schedule over time, but this should always be done under medical supervision. Never stop using netarsudil without discussing it with your eye care provider first.

What Are the Side Effects of Netarsudil?

Like all medications, netarsudil can cause side effects, though many people tolerate it well. The most common side effects are usually mild and tend to improve as your eyes adjust to the medication.

Here are the most frequently reported side effects you might experience:

• Redness of the eye or eyelid (this is the most common side effect)
• Small broken blood vessels on the white part of your eye
• Eye pain or discomfort
• Increased tear production
• Blurred vision immediately after application
• Itching or irritation of the eye
• Swelling of the eyelid
• Feeling like something is in your eye

These common side effects usually settle down within a few weeks as your eyes become accustomed to the medication. The redness often looks more dramatic than it feels and typically doesn't indicate any serious problem.

Less common but more serious side effects can occasionally occur, and you should contact your doctor if you experience:

• Severe eye pain that doesn't improve
• Significant vision changes or loss
• Signs of eye infection (increased discharge, severe redness, fever)
• Corneal problems (severe light sensitivity, severe eye pain)
• Allergic reactions (rash, difficulty breathing, swelling of face or throat)

Very rarely, some people may develop corneal deposits or changes in the cornea's structure. Your doctor will check for these during your regular eye exams.

Who Should Not Take Netarsudil?

Netarsudil isn't suitable for everyone, and your doctor will consider several factors before prescribing it. Some people should avoid this medication due to safety concerns or reduced effectiveness.

You should not use netarsudil if you're allergic to it or any of its ingredients. Signs of allergy might include severe redness, swelling, difficulty breathing, or rash after using the drops.

People with certain eye conditions may need to avoid netarsudil or use it with extra caution:

• Active eye infections or inflammation
• Severe dry eye syndrome
• Recent eye surgery or injury
• Certain types of glaucoma (like angle-closure glaucoma)
• Significant corneal problems

The safety of netarsudil during pregnancy and breastfeeding hasn't been fully established. If you're pregnant, planning to become pregnant, or breastfeeding, discuss the risks and benefits with your doctor.

Children and adolescents under 18 years old shouldn't use netarsudil, as its safety and effectiveness haven't been studied in this age group.

Netarsudil Brand Names

Netarsudil is available under the brand name Rhopressa in the United States. This is currently the only brand name version available, as the medication is still under patent protection.

Rhopressa contains 0.02% netarsudil and comes in a 2.5 mL bottle designed to last about one month with daily use. The bottle has a special dropper tip that helps deliver consistent doses.

Generic versions of netarsudil aren't yet available, which means Rhopressa is typically more expensive than older glaucoma medications. However, many insurance plans do cover it, and the manufacturer offers patient assistance programs for eligible individuals.

Netarsudil Alternatives

If netarsudil doesn't work well for you or causes bothersome side effects, several alternative medications can help lower eye pressure. Your doctor can help you find the best option based on your specific needs and medical history.

Prostaglandin analogs are often the first choice for glaucoma treatment and include medications like latanoprost, travoprost, and bimatoprost. These work differently from netarsudil by increasing fluid drainage through a different pathway.

Beta-blockers such as timolol and betaxolol reduce the amount of fluid your eye produces. These are well-established treatments that many people tolerate well, though they can affect heart rate and breathing in some individuals.

Other options include alpha-agonists (like brimonidine), carbonic anhydrase inhibitors (such as dorzolamide), and combination medications that mix two different drug types in one bottle.

For people who don't respond well to eye drops, surgical options like laser treatment or traditional surgery might be considered. Your eye care provider will discuss these alternatives if medications aren't providing adequate pressure control.

Is Netarsudil Better Than Latanoprost?

Netarsudil and latanoprost are both effective glaucoma treatments, but they work in different ways and have different side effect profiles. Neither is universally "better" - the best choice depends on your individual response and tolerance.

Latanoprost has been available longer and has more extensive research backing its long-term safety and effectiveness. It's typically less expensive and may be covered more readily by insurance plans.

Netarsudil offers some advantages for certain people, particularly those who haven't responded well to prostaglandin analogs like latanoprost. It works through a different mechanism, so it might be effective even if other medications haven't worked well for you.

The side effect patterns differ between the two medications. Latanoprost commonly causes changes in iris color and eyelash growth, while netarsudil more often causes eye redness and irritation.

Your doctor will consider factors like your current eye pressure, previous treatment responses, other health conditions, and personal preferences when choosing between these options. Some people may even use both medications together for better pressure control.