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Intramuscular shots put B12 right into the muscle
Even some meat eaters dont absorb it very well (4, Unlike other vitamins, the absorption of vitamin B12 depends on a protein produced in your stomach, called intrinsic factor
Foods (2019)
Lyophilized powder before mixing can often be stored at room temperature , though refrigeration extends shelf life
When a person experiences low levels of vitamin B12, folate levels drop
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