I have severe eye dryness for that caused doctor had given me cellulose lubricating drop and I use it for temporary relief daily and my eyestrain becomes unbearable at night times. I came to know that this thing happens if I have
vitamin A (retinol) deficiency and I realize very easily that I merely take vitamin A content food because I am nonvegetarian and I don't take seafood. I heard about cod
liver oil. can u suggest me since it has the high content of vitamin A. is there any side effects?