Eggs : Eggs are a good source, even better with other B12 foods
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Vitamin B12 shots can aid with energy levels, brain function, mood enhancement, metabolism improvement, and weight loss
This injection also has positive effects on lambs
How Quickly Can Vitamin B12 Injections Work
Because these surgeries bypass the part of the gut where absorption happens, the American Society for Metabolic and Bariatric Surgery notes that lifelong injections are often required