However, more human research is needed to confirm if these effects are consistent in people
While B12 can be obtained through dietary sources, some individuals may suffer from deficiency due to difficulty absorbing the vitamin properly
The theory of the origin of sleep which has gained the widest credence is the one that attributes it to anemia of the brain The idea behind this supposition has been that, as the day draws to an end, the circulatory mechanism becomes fatigued, the vasomotor center exhausted, the tone of the blood vessels deficient, and the energy of the heart diminished, and thus is the circulation to the cerebral arteries lessened. NATURE, May 5th, 1898
Vitamins used in the IVs are water soluble, so once your body uses whats needed, it will excrete the excess through your kidneys into your urine