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Important: do not take B12 supplements before your blood test Many people quickly reach for supplements when they have vague symptoms
Archived from the original on October 8, 2020
B12 injections: Fast, simple, and effective for those who need only B12
However, if youre already getting enough of the vitamin from your diet, its unlikely that youll notice any changes to your energy levels by taking a vitamin B12 supplement
this is not very common, but if it happens, sitting or lying down for a few minutes post-injection can help
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