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The Institute of Medicine has not established a tolerable upper intake level of B12 because studies show no adverse health effects when taking excess levels of B12, either through food or supplements
Thinking about its safety profile
Retain outer packaging until identity checks are complete, and report damaged seals to purchasing before experimental work continues
Discard any vial showing turbidity, suspended particulate, yellowing, or visible precipitate
Mild injection site reactions are not contraindications, but systemic allergic responses are
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