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Choosing the injection site
[6] Chang, C.H., Tsai, W.C., Lin, M.S., Hsu, Y.H., & Pang, J.H.S
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Without proper levels of methylated B6, B12, folate, B2, and magnesium, dangerous levels of homocysteine may build up in the body
Methylcobalamin and cyanocobalamin are two forms of vitamin B12
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