Natural Medicines Newsletter

Volume 3, Issue 48, 12/30/2011

Question

How does the use of phenytoin (Dilantin) decrease the concentration of vitamin D?

Answer

Vitamin D is a well known fat soluble vitamin that is important for maintaining calcium and phosphate homeostasis, mineralization of the bone, and the modulation of gene expression, cell growth and differentiation.^1-3   As it relates to calcium absorption from the gastrointestinal (GI) tract, vitamin D in the body must be...

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