Daily brief   for adults 50+ Subscribe AM & PM email
50 Plus HubEverything for Everyone 50+
Customize ➞ My age is in the: 50s 60s 70s 80+ Text size Language
‹ Back to Breaking News
health50+

Study Finds Link Between Cialis and Higher Glaucoma Risk

Sunday, September 27, 2026 · 1 sources

A large study of nearly 74,000 men found a potential link between long-term use of Cialis and a higher risk of glaucoma. The study showed men taking the drug for urinary symptoms were more likely to develop glaucoma and other eye pressure problems.

A recent study involving almost 74,000 men has identified a possible connection between the long-term use of tadalafil, commonly known as Cialis, and an increased risk of glaucoma and other eye pressure issues. The research focused on men who were prescribed the medication to alleviate urinary symptoms associated with an enlarged prostate. According to the findings, these men were 22% more likely to develop glaucoma, 32% more likely to develop ocular hypertension, and 33% more likely to be diagnosed with primary open-angle glaucoma or to start glaucoma treatment over a period of five years. The study's results suggest a notable correlation between the use of Cialis and the development of these eye conditions. The study's findings are based on data collected over five years, providing insight into the potential long-term effects of tadalafil on eye health. The increased risk associated with Cialis use is a significant finding that may impact how the drug is prescribed and used in the future.

The 50+ takeaway: Long-term Cialis use may increase glaucoma risk.

Go Deeper

What is the main finding of the study?

The study found that long-term use of Cialis may be linked to a higher risk of glaucoma and other eye pressure problems in men. The risk increase was noted for glaucoma, ocular hypertension, and primary open-angle glaucoma.

How many men were involved in the study?

The study involved nearly 74,000 men, making it a large and significant piece of research into the potential side effects of Cialis.

Why were the men in the study taking Cialis?

The men in the study were taking Cialis to alleviate urinary symptoms caused by an enlarged prostate. This is a common use of the medication beyond its more well-known use for erectile dysfunction.

What are the specific risks associated with Cialis use according to the study?

According to the study, men taking Cialis were 22% more likely to develop glaucoma, 32% more likely to develop ocular hypertension, and 33% more likely to be diagnosed with primary open-angle glaucoma or to start glaucoma treatment over five years.

What is the significance of this study's findings?

The study's findings are significant because they suggest a potential long-term risk associated with the use of Cialis. This could impact how the drug is prescribed and monitored, especially in men with a history of eye problems or those at risk for glaucoma.