Man Loses Vision After Taking Excessive Niacin (Vitamin B3) Supplements Without Doctor's Advice

People have started using vitamin supplements to stay fit and avoid diseases these days. Vitamin B3 (Niacin) has become particularly popular for heart health and cholesterol control. 

However, excessive intake without a doctor's advice can be harmful. A 61-year-old man consumed 3 to 6 grams of Niacin daily for several months. He started this supplement without consulting a doctor. But after some time, news emerged that his eyesight began to deteriorate, and he could no longer see clearly.  

This incident was discovered at the New York Eye and Ear Infirmary of Mount Sinai in the United States. The 61-year-old man was treated at this very hospital. The patient had high blood pressure and cholesterol. For many months, the elderly man had been taking Niacin supplements at his own discretion.

According to the report, he was consuming approximately 3 to 6 grams of Niacin daily. He was taking this amount of Niacin without consulting a doctor, which was much higher than the normal requirement.

Why do people take Vitamin B3?

Niacin is generally used to lower high cholesterol (hyperlipidemia) and improve heart health. In many cases, doctors also recommend it as a medication. This is why people consider it safe and start taking it on their own.

How did it affect the eyes?

During examination, it was discovered that the patient had developed a rare condition called cystoid maculopathy due to Niacin. In this condition, fluid accumulates in the macula of the retina, causing the eye to swell and vision to become increasingly blurry.

This case study was published in the Journal of Vitreoretinal Diseases. Dr. Richard Rosen, the lead researcher of the team, stated that consuming high doses of Niacin without medical advice can pose serious risks to the eyes.

As soon as the patient stopped taking Niacin, his condition improved rapidly. His vision improved within a week, and it was reported that his vision returned to almost normal within two months.

According to experts, the normal dose of Niacin is 1 to 3 grams per day. It can be taken up to 6 grams, but only under a doctor's supervision. Doctors recommend consulting a specialist before taking any vitamin or supplement. Each person's requirement is different, and the wrong dosage can be harmful.