Vitamin B12

Vitamin B12 (cobalamin) is important in the formation of all cells in the body, especially red blood cells and the covering of nerve cells (myelin). The body needs myelin for nerves to function properly.

Vitamin B12 is found in animal products such as meat, shellfish, milk, cheese, and eggs.

People who are vegan and don't eat any animal products are at risk for vitamin B12 deficiency. They need a vitamin supplement containing vitamin B12.

Symptom Checker

Feeling under the weather?

Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.

Interactive Tools

Get started learning more about your health!

Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.