Coverage is more likely if you have an underlying health condition that prevents your body from properly absorbing Vitamin B12 from food or supplements, such as pernicious anemia or certain gastrointestinal disorders, or if you have had specific surgeries like gastric bypass
B vitamins can be deficient for similar reasons as B12, including digestive issues, illness, stress, et cetera
[DOI] [PMC free article] [PubMed] [Google Scholar] 281.Abelson K.S., Hglund A.U
Research institutions and individual scientists must comply with institutional guidelines and regulatory requirements when purchasing and using these compounds
Weight loss results vary by individual
For an immune boost, athletic prep, or recovery you may schedule them on a circumstantial basis