What the Authoritative Sources Say About B12 Deficiency and Supplementation The National Institutes of Health Office of Dietary Supplements publishes the most thorough citation-backed overview of vitamin B12 its role in red blood cell formation and neurological function, the populations most at risk for deficiency (older adults, people on long-term metformin or proton pump inhibitors, vegetarians and vegans, people who have had gastric bypass surgery), and the recommended daily intake at each life stage
Key scientific figures and citations AOD9604 is a synthetic peptide analogue of the lipolytic domain of human growth hormone that has been shown to reduce body weight in obese rodents without the diabetogenic effects of intact hGH. Ng FM
How quickly your body responds depends on factors like your metabolism, current B12 levels, and lifestyle
While unlikely with a short insulin needle used for subcutaneous injections, accidentally hitting a vein would lead to a very rapid, intravenous-like administration
From the first reference on that page: "Previous reports that megadoses of vitamin C destroy vitamin B12 have not been supported (92) and may have been an artifact of the assay used to measure vitamin B12 levels (17)." That's fine...but I'm pretty keen to try whatever to lower my b12 so I look more like a human being again