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Even without frank deficiency, dialing in riboflavin can help with energy, cognitive function, and overall wellness if you are on the edge of your optimal range
Patients with more severe or longstanding deficiency may take longer to notice the full benefit
doi: 10.1111/j.1751-553X.2008.01115.x Preston ST, Hegadoren K
Krycer JR, Yugi K, Hirayama A, Fazakerley DJ, Quek L-E, Scalzo R, et al
Metformin, commonly used in diabetes management, has been associated with reduced vitamin B12 absorption, potentially through effects on calcium-dependent vitamin B12-intrinsic factor absorption in the terminal ileum
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