Clams, Oysters, and Mussels

Shellfish are a great source of vitamin B12 and can be eaten raw, baked, steamed, fried, or made into chowder. In addition to vitamin B12 shellfish are a good source of zinc, copper, and iron. Clams provide the most vitamin B-12 with 98.9μg per 100g serving, accounting for 1648% of the RDA. That is 84μg (1401% RDA) per 3 ounce serving, and 187.9μg (3132% RDA) in 20 small clams, or 9.4μg (156.6 %RDA) in one small clam. Mussels and oysters are also good sources of B12 providing 600% RDA and 400% RDA per 100 gram serving.