what to expect after a vitamin b12 injection Dosage Why Do I Feel Worse
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Declaration of interest: K
So, unless youre deficient, megadoses of vitamin B12 may be just passing through your body and making some organs work harder (NIH-a, 2021)
So the risk of taking excessively high doses of B12 is mitigated as long as your kidneys are working (which is the case for many of you)
Allow the vial to reach room temperature before opening
