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Last updated: April 1, 2026 If you have been feeling unusually tired this spring or wondering whether a vitamin B12 injection might be the answer, you are not alone
Good news for the needle-nervous: research supports the safety of this approach
Commonly used for blood sugar management, Metformin can interfere with how the small intestine absorbs B12
And it goes without saying, but sharing injection supplies or medication is both illegal and potentially dangerous
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