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You have higher levels of the chemicals homocysteine and methylmalonic acid and reduced DNA synthesis, leading to neurological and psychological symptoms, such as confusion, mood swings, problems walking or talking, and irritability
however, it is known that a considerable proportion of the complex is not absorbed from muscle tissue over an extended period
The lack of intrinsic factor is most commonly due to autoimmune gastritis, which causes an autoimmune attack on the parietal cells that create it in the stomach
Compounded preparations are not reviewed, approved, or verified by the U.S
PMID: 32050436
Quick Absorption One of the main advantages of vitamin B12 injections is their ability to deliver the vitamin directly into the bloodstream, bypassing the digestive system
