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Adequate B vitamin availability supports: Normal digestive enzyme activity Maintenance and repair of the intestinal lining Neural signaling involved in GI motility Effective nutrient absorption This makes B-complex particularly relevant for individuals with altered intake, impaired absorption, or increased gastrointestinal stress
A standard blood test for vitamin B12 can be misleading, especially if you've been taking high-dose B12 supplements
There's limited evidence that doses above 600mcg provide additional benefit
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