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Description
While B12 injections are generally safe, its essential to be aware of potential B12 injection side effects, which may include- 1

This often makes oral supplements insufficient

The most bioavailable forms of B12 are methylcobalamin, hydroxocobalamin, and adenosylcobalamin
While these changes are temporary and usually resolve within 24 to 48 hours after you stop eating the food, they can often be confused with more serious symptoms
