6 Foods High in Vitamin B12 Plant-Based Sources While Vitamin B12 is typically found in animal products, some plant-based foods may contain small amounts or support better absorption when fortified or paired with B12-rich diets. Mushroom Certain varieties like shiitake may contain trace amounts. Beetroot Promotes red blood cell health and supports energy metabolism. Mango Rich in nutrients and may aid nutrient absorption. Banana Contains supportive vitamins for nervous system function. Apple Helps maintain gut health, which is vital for B12 absorption. Potato A source of energy and B-complex vitamins. Note: True, bioavailable Vitamin B12 is primarily found in animal-based foods or fortified products. Always check with a healthcare provider before relying solely on plant sources for B12 intake.