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If B12 levels are already normal, additional B12 is unlikely to improve fatigue
[12] If any mild side effects are persistent or troublesome, patients should inform their healthcare provider
The people who found closer to 50% in their urine probably had a slight vitamin B12 deficiency, and some of the vitamin was stored for later use
Proper reconstitution, refrigerated storage, and sterile injection practices are essential for safety and efficacy
Acknowledgments We thank the members of Chan Lab for critical comments on this manuscript
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