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When it comes to supplements, taking high doses of vitamin C at the same time as your B12 shot might slightly lower the amount of B12 your body can use, but this is more relevant for oral B12 supplements than injections
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This extended half-life means any interaction with a stacked compound persists for days, not hours
Mild side effects may include slight redness or tenderness at the injection site, but these usually resolve quickly.
Top B12 Shot Brands Choosing the right B12 shot brand can significantly impact your health
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