Sildenafil citrate, tadalafil, and vardenafil are three popular drugs prescribed to treat Erectile Dysfunction (ED) in men. The products are marketed under the brand names Viagra, Cialis, and Levitra.

Since initial approval by the U.S. Food and Drug Administration (FDA) in 1998, these drugs have been used by more than 25 million men in the United States.

Vision at Risk

After taking ED medications, a number of men have suffered a loss of eyesight in one eye. This type of vision loss—known as Nonarteritic Anterior Ischemic Optic Neuropathy (NAION)—occurs when blood flow to the optic nerve is blocked. Ophthalmologists describe NAION as a “stroke of the eye.”

While professionals cannot determine if ED medications cause NAION, men run a far higher risk if they have heart disease, are over 50 years old, or smoke. Men with diabetes, high blood pressure or cholesterol, or a history of certain eye problems are also at increased risk.

A Potential Link

In 2005, the FDA released a news alert on the condition. As of May 2005, the FDA had received 43 reports of NAION among patients taking Viagra, Cialis, or Levitra. More than half of these patients reported continuing and permanent visual loss.

They have since approved new labels for Viagra, Cialis, and Levitra to include information on possible eyesight loss caused by NAION. If you take Viagra, Cialis, or Levitra and suffer a loss of eyesight, seek medical attention right away.


If you have suffered harm after taking Viagra, trust Carter Mario Law Firm to help. Contact our team today at 203-876-2711 to schedule your free, no-obligation consultation.


We Can Help

Over the past three decades, our team of Connecticut personal injury attorneys has successfully handled thousands of cases. Our team-based approach allows us to pool our strengths and promote open communication. As a result, we have been able to recover millions of dollars in compensation for our clients. Regardless of the complexities of your case, we can help protect your rights.

When you or someone you love suffers serious harm caused by a dangerous drug, you need experience on your side. Let Carter Mario Law Firm protect your rights. Just call 203-876-2711 today. You can also submit a FREE Initial Consultation Form. We know dangerous drug claims—and stand ready to help you receive the compensation you deserve.

The Carter Mario team offers decades of combined legal experience. We provide 24/7 access to our compassionate attorneys—along with our exclusive Zero Fee Warranty. With Carter Mario, you don’t owe any attorneys’ fees unless we recover on your behalf. It’s that simple. Call 203-876-2711 to find out how Carter Mario can help you today.

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