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Building Blocks includes methylcobalamin at a performance-oriented daily dose, so B12 isn't the weak link when you're on a testosterone or GLP-1 protocol

Figure 5b shows the distribution of compounds to five groups

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Inadequate use of vitamin B 12 , which may occur if antimetabolites for the vitamin are employed in the treatment of neoplasia Pernicious anemia is the most common cause of vitamin B 12 deficiency

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