Yes, you can give yourself vitamin B12 injections if youre trained and know how
Intestinal motility will slow down (2)
Faster return to running through effective treatment carries significant practical value for serious runners
For more on vitamin B12 and mood disorders, check out this study
Cyanocobalamin Injection, Solution NDC Package 0517-0032-25 Package Information Cyanocobalamin injection is cyanocobalamin is indicated for vitamin B12 deficiencies due to malabsorption which may be associated with the following conditions: Addisonian (pernicious) anemia Gastrointestinal pathology, dysfunction, or surgery, including gluten enteropathy or sprue, small bowel bacteria overgrowth, total or partial gastrectomy Fish tapeworm infestation Malignancy of pancreas or bowel Folic acid deficiencyIt may be possible to treat the underlying disease by surgical correction of anatomic lesions leading to small bowel bacterial overgrowth, expulsion of fish tapeworm, discontinuation of drugs leading to vitamin malabsorption (see Drug Interactions), use of a gluten-free diet in nontropical sprue, or administration of antibiotics in tropical sprue
Dendritic cells are the immune system's scouts