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Intrinsic factor, a protein that shuttles B12 through the absorption process, becomes saturated after a meal containing an above-average amount of B12 and about 4 to 6 hours are required before it can efficiently absorb another dose (IOM, 1998)
The IRR is upregulated in tissues under stress, meaning it becomes more active precisely where the body needs repair
Pharmaceutical Research, 16(9), 1412-1416
The glutathione benefits and side effects have made it a topic of great interest in the skincare industry
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