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Precautions 1.This product is highly toxic, and the intramuscular injection dose should be strictly controlled

Vitamin B-12 from algae appears not to be bioavailable

As we age, our body's ability to absorb vitamin B12 decreases, increasing the risk of deficiency

You may find that you need more or less, depending on several factors including whether or not you are severely B12 deficient or just want a daily maintenance dose

Supports healthy peripheral nerve function

The durability of vaccine protection is another key area that requires a better understanding of the fundamentals of immune memory, a key question being how can we limit the acute contraction of the adaptive immune response after prophylactic vaccination and limit attrition of long-term memory , in particular for nAb titers in the blood?