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Discover Supplement-Drug Interactions
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Last Updated: 3 years ago
supplement:
Tannins
supplement:
St John's Wort
Research Papers that Mention the Interaction
“Also, the tannic acid present in St. John’s Wort may prevent absorption of iron, an important mineral for pregnant women and their babies.”
St John's wort (Hypericum perforatum).“Also, the tannic acid present in St. John’s Wort may prevent absorption of iron, an important mineral for pregnant women and their babies.”
“ Tannic acids present in some herbs (eg, St John wort and saw palmetto) may inhibit the absorption of iron.”
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