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When it comes to taken vitamins, you may be swarmed with B’s, no pun intended. Tons of vitamins with the letter B with a number after them, and they’re all so confusing. Among other B vitamins, Vitamin B12 is a vitamin that has many benefits. What are the benefits of vitamin B12, you may ask? Well, there are quite a lot. Almost all the body systems, which are vital for human health, get major help from Vitamin B12.