What Is Travoprost? Uses, Dosage, and What You Need to Know in 2026

Travoprost is a prescription eye drop used primarily to treat glaucoma and elevated eye pressure. If you or someone you know has recently been prescribed travoprost (brand name Travatan Z), this guide covers everything you need to know — from how it works and how to use it, to costs, side effects, and what to do if your pharmacy doesn't have it.

What Is Travoprost?

Travoprost is a synthetic prostaglandin analog — a drug that mimics a naturally occurring compound in the body called prostaglandin F2α. It belongs to the class of medications known as ophthalmic glaucoma agents. The FDA first approved travoprost (as Travatan) in 2001, and the improved formulation Travatan Z (which uses a gentler preservative called sofZia) was approved in 2006. Generic versions are now available from multiple manufacturers.

In 2020, travoprost was the 304th most commonly prescribed medication in the United States, with more than 1 million prescriptions filled. It remains a first-line treatment for open-angle glaucoma — the most common form of the disease — in adults 16 and older.

What Is Travoprost Used For?

Travoprost has one FDA-approved indication:

Reduction of elevated intraocular pressure (IOP) in patients with open-angle glaucoma or ocular hypertension

Open-angle glaucoma is a chronic eye condition in which the eye's drainage system becomes less efficient over time, causing IOP to rise. Without treatment, elevated IOP damages the optic nerve and leads to progressive, irreversible vision loss. Ocular hypertension means elevated IOP without (yet) visible optic nerve damage — but treatment is often started to prevent future damage.

In clinical trials, patients with baseline IOP of 25–27 mmHg who used travoprost once daily in the evening achieved 7–8 mmHg reductions in IOP — a highly meaningful reduction that dramatically reduces the risk of optic nerve progression.

How Do You Take Travoprost?

Travoprost is available as a sterile ophthalmic solution (eye drop) at a concentration of 0.004% (0.04 mg/mL). The standard dosing is:

Dose: One drop in the affected eye(s) once daily

Timing: Evening is preferred — travoprost reaches maximum effect ~12 hours after application

Frequency: Once daily ONLY — more frequent dosing decreases effectiveness

Contact lenses: Remove before applying; wait 15 minutes before reinserting

Multiple eye drops: Wait at least 5 minutes between different eye drop medications

Storage: Store at 36–77°F (2–25°C). Travatan Z does not need to be discarded after opening — use until expiration date. Check generic travoprost instructions, as some brands differ.

Brand Names and Generic Versions

Brand: Travatan Z (Sandoz/Novartis), Izba (0.003% formulation)

Generics: Available from Mylan, Lupin, Apotex, Glenmark, Sagent, Alembic, and others

Key Side Effects to Know

The most common side effect is eye redness (30–50% of patients). Travoprost is also well-known for causing permanent iris color change (darkening) and reversible eyelash changes (longer, thicker, darker lashes). Serious but uncommon side effects include macular edema and uveitis. Never use two prostaglandin analogs at the same time.

Who Should NOT Use Travoprost

Children under 16 years (pigmentation safety concerns with long-term use)

Patients with active uveitis (travoprost may worsen inflammation)

Pregnant women — Pregnancy Category C; use only if benefit outweighs risk

Patients with angle-closure, inflammatory, or neovascular glaucoma (not evaluated for these types)

What Does Travoprost Cost?

The average retail price for generic travoprost (2.5 mL, 0.004%) is approximately $190 per bottle. With a GoodRx discount coupon, this drops to as low as $28–50. Most insurance plans cover generic travoprost, typically with a $0–30 copay for Tier 1–2 coverage. For uninsured or underinsured patients, manufacturer patient assistance programs are available.

For a detailed review of side effects, see: Travoprost Side Effects: What to Expect and When to Call Your Doctor.

For the science behind travoprost: How Does Travoprost Work? Mechanism of Action Explained in Plain English.