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Key Takeaways: B12 shot effects stay for about one to two weeks Some people notice benefits lasting up to a month If absorption is an issue, weekly injections might be necessary Energy, mood, and metabolism can improve at different paces Your past health impacts how long the effects stay
Vitamin B12 is an essential nutrient that supports red blood cell formation, neurological function, and DNA synthesis
Then, youll get them once a week for a month
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In people with normal B12 levels, though, injections have not been shown to boost athletic performance
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