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As you can see, there's a lot to consider when deciding between vitamin B12 injections vs pills

Smoking is a potential risk factor for regular use of high-dose vitamin B12 supplements as hepatic tumorigenesis may be promoted

In 2011 we wrote about Amazon selling a handful of prohormones that had been involved in the infamous Bodybuilding.com raid of 2009, which at the time was one of the largest FDA enforcement action to date

Most importantly, vitamin B12 methylcobalamin is the specific form of B12 needed for nervous system health

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However, these findings do not establish the combination as a proven weight-loss treatment