Today, most vegetarian literature does warn about the very real possibility of depletion and recommends routine supplementation with B12. (westonaprice.org)
The AAP, «recommends against routine supplementation of non dehydrated breastfed infants with water or dextrose water.» (themilkmeg.com)
The UK and Australian guidelines state that evidence is lacking to support routine supplementation of vitamin A and that excessive quantities of fat - soluble vitamins may cause harm. (westonaprice.org)