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GASTROINTESTINAL EFFECTS Transient GI effects (nausea, vomiting, constipation, diarrhea) are common during dose escalation, particularly in the first 24 weeks
What the evidence does support is this: B12 deficiency causes fatigue and neurological symptoms, and correcting deficiency in people who are deficient improves those symptoms
B12 Injections Vitamin B12 injections for energy help improve metabolism, mental clarity, and red blood cell production
These include: Reference ranges for measuring GSH in the body are lacking and muddied by individual variation
Interpreting available data requires cautioneffects in test tubes do not always translate to clinical outcomes in humans
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