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Medications taken by mouth (Oral drugs)
Interaction Rating: Moderate Be cautious with this combination.
Talk with your health provider.
European chestnut contains a large amount of chemicals called tannins. Tannins absorb substances in the stomach and intestines. Taking European chestnut along with medications taken by mouth can decrease how much medicine your body absorbs, and decrease the effectiveness of your medicine. To prevent this interaction, take European chestnut at least one hour after medications you take by mouth.
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