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Most people do not need to worry if they are deficient in vitamin B12, but if you are a vegetarian or have had weight loss surgery , its a good idea to ask your healthcare provider for a blood test to check your levels
In addition, low levels of stomach acid and IF in older populations can make getting enough through diet tricky, which is why supplementation is typically recommended
Without appropriate manufacturing oversight, theres no guarantee that the contents of the vial match the label
Protocols describe freezing only lyophilized (powder) peptides
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