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Possible long-term risks of vitamin B12 Most side effects of high doses of B12 are rare and temporary
Skip aspiration for subcutaneous shots it isnt needed [10]
Vitamin B 12 is essential for the nerve and brain health, red blood cell and DNA production, metabolism and preventing anaemia
It is worth being clear here: in people with normal B12 levels, injections have not been shown to improve athletic performance or endurance
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