Cobalamin

Vitamin B12, also known as cobalamin, is a water-soluble vitamin, one of the eight-part B complex.

Physiology
B12 is involved in cellular metabolism and formation of red blood cells (RBCs). It has an integral role in brain and nervous system function. B12 is made from an intrinsic factor, i.e., a glycoprotein, in the human stomach.

Immune system
Vitamin B12 deficiency may be associated with decreased natural killer cell activity.

Notable studies

 * 2015, Response to Vitamin B12 and Folic Acid in Myalgic Encephalomyelitis and Fibromyalgia [(Full Text)
 * 2000, Cobalamin Used in Chronic Fatigue Syndrome Therapy Is a Nitric Oxide Scavenger (Abstract)

Learn more

 * Linus Pauling Institute Micronutrient Information Center - Vitamin B12