Where does the vitamin B12 come from?

Sources of Vitamin B12

The only reliable vegan sources of B12 are foods fortified with B12 (including some plant milks, some soy products and some breakfast cereals) and B12 supplements. Vitamin B12, whether in supplements, fortified foods, or animal products, comes from micro-organisms.

Top 10 Sources of Vitamin B12

1. Liver (Beef)

71 mcg per 3-ounce serving
Provides 2951% of DRI
114 calories

2. Mackerel

16 mcg per 3-ounce serving
Provides 667% of DRI
174 calories

3. Sardines

8 mcg per 3-ounce serving (most cans are 3-4 ounces ea.)
Provides 333% of DRI
189 calories

4. Fortified Cereals

5 mcg per cup
Provides 208% of DRI
160 calories

5. Red Meat

5 mcg per 3-ounce serving
Provides 208% of DRI
213 calories

6. Salmon

4 mcg per 3-ounce serving
Provides 167% of DRI
119 calories

7. Fortified Soy

2 mcg per 3-ounces serving
Provides 83% of DRI
45 calories

8. Milk

1.2 mcg per cup (8 fluid ounces)
Provides 50% of DRI
83 calories

9. Swiss Cheese

1 mcg per ounce
Provides 42% of DRI
108 calories

10. Yogurt

1 mcg per cup
Provides 42% of DRI
149 calories