Hi, I have just come across an article online which I thought may be of interest to anyone who suffers from dry eyes as I do:
Vitamin B12 is a water-soluble vitamin that helps the body make DNA and nerve cells. Deficiency of this nutrient is associated with severe dry eye disease and eye pain, according to a 2017 study.
In a 2020 , the combination of oral vitamin B12 supplements and artificial tears improved symptoms of dry eye syndrome. According to the researchers, vitamin B12 may repair the corneal nerve layer, or the nerves on the eye’s outer surface. This can help reduce the burning associated with dry eye.
A 2015 case report also shares that vitamin B12 supplements improved symptoms in a person with chronic dry eye.
There isn’t a recommended vitamin B12 dosage for dry eye symptoms. Additionally, how much you should take depends on your ability to absorb the vitamin. Though doses of 2,000 micrograms are generally considered safe, talk with a doctor before taking vitamin B12 for dry eye.
The article also mentions taking Vitamins A, D and Omega-3.
Hope this helps!