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Three RCTs met inclusion criteria The trials randomized 153 participants (74 participants to oral vitamin B12 and 79 participants to IM vitamin B 12 )
Deviating from that schedule either skipping shots or getting too many can reduce effectiveness and increase the risk of side effects
Magnesium Magnesium levels in the blood rise soon after an IV infusion and typically remain elevated for about 35 hours before the kidneys begin clearing the excess
Since B12 is found solely in animal products, people with restricted diets often get very little B12, even if they eat synthetically fortified foods
The disorder stems from abnormal keratinization of hair follicles, resulting in the formation of small plugs that block follicular openings
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