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While B12 is naturally found in animal products like meat, dairy, and eggs, many people struggle to get enough from diet alone
The muscle is injected with the medication (known as an intramuscular injection)
That idea is an extrapolation from rat data
Many people, including those over 50, on PPIs or metformin, or with GI conditions, produce insufficient intrinsic factor
Continue Reading How much do B12 shots cost
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