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If you're not deficient, these injections are unlikely to be the 'magic bullet' you're looking for
These side effects are typically temporary and resolve on their own
The amount needed can change based on how severe the deficiency is
The question remains: how often can you get a B12 shot
Can B12 shots not work
According to the 2025 meta-analysis by Alfalasi and colleagues, sublingual B12 showed an approximate 199% mean increase in serum B12 compared to approximately 307% for intramuscular injections
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