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No human trial dose exists Every dose number above comes from rodent studies scaled to a human size or from research community use
Jannet Shamblen Leon, WV (USA) Your B12 works
Within the first week , many patients notice subtle improvements in energy levels and general wellbeing, though this is not universal
Colchicine para-aminosalicylic acid and heavy alcohol intake for longer than 2 weeks may produce malabsorption of vitamin B 12
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