Vyzulta (latanoprostene bunod ophthalmic solution) is a prescription eye drop for lowering intraocular pressure (IOP) in patients with glaucoma or ocular hypertension. It's unique because it works through two pathways-prostaglandin and nitric oxide-providing enhanced pressure-lowering effect.

Official website: vyzulta.com

Key takeaways

  • Dual mechanism: prostaglandin + nitric oxide pathways
  • May provide additional IOP lowering beyond standard prostaglandins
  • Once daily dosing in the evening
  • Side effects similar to prostaglandins: including eye color changes
  • For glaucoma or ocular hypertension

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Visual guide: Vyzulta: two pathways for fluid drainage
Educational schematic of Vyzulta uveoscleral and trabecular outflow pathways and follow-up pressure assessment.
Read this visual as text
Prostaglandin pathway: Latanoprost acid increases drainage through the uveoscleral route. Nitric oxide pathway: Nitric oxide relaxes the trabecular meshwork to improve conventional outflow. Check the result: Follow-up pressure measurements show whether the treatment meets your target.
Educational schematic: vyzulta: two pathways for fluid drainage. Symbols summarize the article; they are not clinical images.

How It Works

Vyzulta provides dual-action pressure lowering:

Prostaglandin pathway (latanoprost acid):

  • Increases fluid drainage through the uveoscleral pathway
  • Same mechanism as latanoprost

Nitric oxide pathway (butanediol mononitrate):

  • Relaxes trabecular meshwork
  • Increases fluid drainage through conventional outflow
  • Adds to prostaglandin effect

This dual mechanism may provide better pressure control than prostaglandins alone.

Common Uses

  • Open-angle glaucoma
  • Ocular hypertension
  • When maximum IOP lowering is needed
  • Alternative to standard prostaglandins

How to Use

  • Dosing: One drop in affected eye(s) once daily in the evening
  • Timing: Evening dosing is important
  • Contact lenses: Remove before use; wait 15 minutes before reinserting
  • Technique: Standard drop instillation
  • Multiple drops: Wait at least 5 minutes between different medications
  • Storage: Refrigerate unopened at 2-8°C (36-46°F); after opening, store at 2-25°C (36-77°F) for up to 8 weeks

What to Expect

Pressure Reduction

  • Typically lowers IOP by 7-9 mmHg
  • May provide 1-2 mmHg additional lowering vs. latanoprost alone
  • Effect maintained with continued use

Side Effects

Similar to other prostaglandin drops-see below

Side Effects

Common

  • Eye redness (conjunctival hyperemia)
  • Eye irritation
  • Eye pain
  • Increased eyelash growth
  • Darkening of eyelashes
  • Iris color change (permanent)
  • Eyelid skin darkening

Less Common

Long-Term Changes

From the prostaglandin component:

  • Iris may darken (especially in mixed-color eyes)
  • Eyelashes become longer, thicker, darker
  • Eyelid skin may darken
  • Changes may be permanent

Precautions

  • Eye inflammation: Use with caution in active intraocular inflammation
  • Macular edema risk: Use with caution in aphakia, pseudophakia with torn posterior lens capsule
  • Contact lenses: Remove before use
  • Pregnancy: Discuss with doctor
  • Storage: Refrigerate unopened; room temperature after opening (use within 8 weeks)

Cost and Insurance

  • Brand-name medication
  • May require prior authorization
  • Check manufacturer savings programs
  • Generic latanoprost is much less expensive if adequate

Deciding Whether the Added Cost Is Worthwhile

Ask how much additional lowering your eye needs, whether Vyzulta reaches that target at follow-up, and whether a lower-cost option or laser would meet the same goal. Bring the bottle and report missed doses or irritation; the best regimen is one you can use consistently.

Pregnancy and Breastfeeding

The label reports developmental toxicity in animal studies and insufficient human pregnancy data. There are no human milk or infant-effect data. Discuss pregnancy plans or breastfeeding with your glaucoma clinician and obstetric team before changing treatment; untreated high pressure also threatens vision.

Frequently Asked Questions

Is Vyzulta better than regular latanoprost?

Vyzulta may provide 1-2 mmHg additional IOP lowering compared to latanoprost. Whether this matters depends on your target pressure and how well you respond to standard prostaglandins. Your doctor can help determine if Vyzulta is appropriate for you.

Prostaglandin-type medications work best when used in the evening. Studies show this timing provides optimal 24-hour pressure control.

Will Vyzulta change my eye color?

Like other prostaglandins, Vyzulta can cause iris darkening, especially in eyes with mixed colors (hazel, green-brown). This change is gradual and usually permanent.

Can I switch from latanoprost to Vyzulta?

Yes, your doctor may switch you if additional pressure lowering is needed. The transition is typically straightforward.

What if I was on refrigerated Vyzulta and it got warm?

An opened bottle can be stored at 2-25°C (36-77°F) for up to eight weeks. If an unopened bottle became warm, tell the pharmacist how warm it became and for how long before using it; do not assume every temperature excursion is acceptable.

Is generic Vyzulta available?

Generic availability can change. If cost is a concern and adequate control isn't achieved with generic latanoprost, ask your pharmacist and doctor about current options.

References