Nasal Spray for Dry Eye Syndrome

This trial tests a nasal spray treatment to improve eye health in individuals with dry eye syndrome caused by mild to moderate Meibomian gland dysfunction (MGD), which affects the oil-producing glands in the eyelids. Researchers aim to determine if the varenicline nasal spray can enhance gland function and alleviate symptoms like dryness and discomfort. Individuals with noticeable dry eye symptoms and mild to moderate MGD, but not severe cases, may be suitable for this study. Participants will use the nasal spray twice daily for three months while discontinuing other dry eye medications. As a Phase 4 trial, this research involves an FDA-approved treatment and seeks to understand its benefits for more patients with dry eye syndrome.

Yes, you will need to stop taking any prescription medications for dry eye disease and any topical eye drops before all planned visits.

Research has shown that varenicline nasal spray is generally safe for people with dry eye disease. In clinical trials involving 349 participants, most did not encounter major safety issues. Reports indicate that it is very safe, with fewer discontinuations compared to other dry eye treatments. Some studies also found improvements in eye moisture and comfort, suggesting its effectiveness and safety. However, its safety and effectiveness are not fully confirmed, so further research continues. Overall, current evidence suggests that varenicline nasal spray is a safe option for managing dry eye symptoms.¹²³⁴⁵

Unlike the standard treatments for dry eye syndrome, which often include artificial tears or anti-inflammatory eye drops, this new nasal spray uses varenicline as its active ingredient. Varenicline targets the trigeminal nerve pathway, which is thought to stimulate natural tear production. Researchers are excited about this treatment because it offers a unique delivery method—administered as a nasal spray rather than eye drops—which could provide more consistent relief and improve patient compliance. This innovative approach may offer a more effective and user-friendly solution for those suffering from dry eye syndrome.

Research has shown that varenicline nasal spray effectively treats dry eye disease. Studies have found that this spray significantly improves tear production. In one study, participants' tear production increased by about 10.4 mm on a tear measurement test after four weeks of treatment. Other studies confirm that varenicline is safe, and most people experience positive results. The FDA approved this nasal spray in 2021 specifically for dry eye disease, highlighting its effectiveness.¹³⁴⁵⁶