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Vitamin B12 deficiency can cause a swollen, red, or sore tongue, as well as mouth ulcers
Practices can choose to rebrand existing formulations or develop fully custom products, depending on their goals
More than 1 in 3 people take daily oral supplements and while they can be beneficial, the body's natural absorption process can render up to 85% of a vitamin tablet useless - so only 15% of the active nutrients may actually find their way into the bloodstream
Philadelphia: Lippincott Williams & Wilkins
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