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Human clinical trial data remain sparse but are accumulating
Your red blood cells have a lifespan of 90 days
These shots can boost B12 levels, giving faster results in energy and metabolism
Megadoses of up to 2,000 mcg are considered safe in treating a B12 deficiency, but its best to avoid excessive amounts of any vitamins, especially when not needed
Conditions such as pernicious anaemia, gastrointestinal surgery, or inflammatory bowel disease impair B12 absorption in the terminal ileum
Purity, claimed at 99% on the product labels, came in between 7.7% and 14.37% across tested batches
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