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For non-prescribed supplements, discuss your results with your GP, who may recommend reducing or temporarily stopping supplementation and retesting after 2-3 months
The main limitations are GI side effects: nausea, constipation, and slowed gastric emptying
This kinase cascade is part of the broader MAP kinase signaling network that regulates cell proliferation, differentiation, and stress response pathways
At this point, there is insufficient evidence to recommend B12 supplementation for fatigue beyond correcting a deficiency
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