Haeba ngoana oa hao a lula a ja lihlahisoa tsa lebese le mahe (lacto-ovo-vegetarian), ho noa ha hae vithamine B12 ho lekane. Ho seng joalo, e kotsing ea khaello ea vithamine B12 e fumanehang haholo lihlahisoa tsa liphoofolo. Mefuta ea soya (soya), lijo-thollo tse nang le liqhobosheane, tomoso, soya e matlafalitsoeng kapa lino-mapholi ke mehloli ea vithamine B12. Ho ka hlokahala tefiso e eketsehileng. Hape, batla keletso ho ngaka ea bophelo bo botle. Haeba 'm'a e le vegan, lebese la letsoele le ka ba le vithamine B12 e tlase haholo 'me lesea le lokela ho noa tlatsetso ea vithamine B12. Ho kgothaletswa ho kenyelletsa bonyane li-servings tse tharo ka letsatsi tsa lijo tse nang le vithamine B12 kapa ho nka tlatsetso ea 5 µg ho 10 µg ea vithamine B12.