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The 28-day limit comes from the manufacturer label and from United States Pharmacopeia (USP) guidance, not from a guess
As your B12 levels rise, your cells receive more oxygen: and you feel more alert and energised
Some symptoms of a vitamin B12 deficiency include: difficulty thinking brain fog fatigue pale skin weight loss dementia numbness and tingling in hands and feet mood changes decreased appetite constipation A lack of animal protein and following a plant-based diet sans appropriate supplementation can lead to a vitamin B12 deficiency
B12 injections
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