2.Vitamin U was termd from the fact that a very small quantity of this compound was effective for the medical treatment of the gastric ulcer. From the word ulcer came letter "U". But the Vitamin U isn't vitamin, it is a derivativ of the acid methionin.
3.Vitamin U strengthens the immunsystem of human, animal, and plant cells. Protects from damage the membran systems of living sells (the walls cellorganels, etc). Moreover the damage can be stopped and can easily be regenerated.