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Common signs of B12 deficiency include fatigue, weakness, pale skin, shortness of breath, numbness or tingling in the hands and feet, difficulty maintaining balance, and cognitive issues like memory problems
Once you open it or puncture the vial, it's a one-and-done situation
Physiology of folate and vitamin B12 in health and disease
human clinical safety remains insufficiently characterized
Preclinical studies have demonstrated no significant toxicity even at doses far exceeding therapeutic ranges
A Perspective on the Kinetics of Covalent and Irreversible Inhibition
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