But, they might be given more often, like weekly, based on how the patient responds
This is probably explained by the fact that S-adenosylmethionine (SAM), which is important for many epigenetic processes, is regenerated by methylcobalamin, whereas cyanocobalamin reduces it (as we explored above)
[6] [3] [10] A mild deficiency may not cause any discernible symptoms, but moderate deficiency can cause various symptoms, such as feeling tired, lightheadedness, headaches, cold intolerance, pale skin, sore tongue, upset stomach, loss of appetite, hair and skin color changes, numbness or tingling (pins and needles) of the fingers and toes, and tinnitus, and vision, cognitive or psychological problems
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