a set of natural products rich in vitamin b12 cobalamin. healthy food concept. cardboard sign with the inscription.

bvitamins b12 cobalamin cyanocobalamin liver beef salmon eggs spinach milk yogurt cheese metabolism anemia neurological medical sign vitamin pharmacy vitamins alphabet creative food product meal eating supply nutrition diet ingredient health element mineral supplement concept vegetables cereals legumes dairy deficiency meat fish avitaminosis beriberi antioxidant essential nutrient