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If you have a ready supply of vitamin B12, it will be hard to say exactly how long it will stay in the body
[11] [6] Rare but serious reactions: Although uncommon, anaphylaxis (severe allergic reaction) can occur
Severe allergic reactions, or anaphylaxis, are a risk with all vaccinations but are generally a rare occurrence
People who find it difficult to get enough vitamin B12 in their diets, such as those following a vegan diet, may need vitamin B12 tablets for life
Two of the most popular choices are vitamin C shots and B12 shots, both designed to deliver nutrients directly into your bloodstream for immediate absorption