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Expected Duration of B12 Injection Benefits The duration of vitamin B12 injection benefits can vary based on individual factors, but in general, the effects of a single injection can last for several weeks to several months
Updated 2026/04/28
Grade: For research purposes only
Once you open it, it goes straight into the fridge, or youll have a science experiment of a different kind on your hands in a day or two
It's not an approved drug, supplement, or food additive
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