One of the vitamers of vitamin B12.
Vitamin of the B-complex group essential for normal metabolism, nerve function, and blood formation; rich sources are liver, kidney, eggs, and other meats and dairy products; used to prevent and treat pernicious anemia and certain other anemias. Also called vitamin B12; antipernicious anemia factor.
The name given by the British Pharmacopoeia Commission to vitamin B,,, found to be an effective substitute for liver in the treatment of pernicious anaemia. It has now been replaced by hydroxocobalamin as the standard treatment for this condition.
The form of vitamin B12 available for use in the U.S.