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Can You Take Iron with St John's Wort?
MODERATE INTERACTION
St John's Wort may reduce iron absorption, take them at different times.
1 studies
Moderate evidence
Reduced iron absorption
MODERATE INTERACTION
St John's Wort may reduce iron absorption, take them at different times.
•
1 studies
•
Moderate evidence
Reduced iron absorption
Detailed Analysis
✓ Complete
Taking St John's Wort and iron together may decrease iron absorption. This can lead to reduced effectiveness of iron supplements. To minimize this interaction, it's recommended to take them at different times. Tannic acids in St John's Wort may decrease iron absorption by binding to iron in the gut, making it less available for the body. This can lead to reduced iron levels.
What else do you take?
2/10Check your full stack — every pair, not just this one
IronSt John's WortAdd more
Optimal Timing
100%
Early Morning
6:00 – 7:30 AM
IronTake on an empty stomach
Morning
8:00 – 10:00 AM
St John's WortTake with a meal
💡 Iron can also be taken in the morning
Research Sources (1)
Herbal medicinals: selected clinical considerations focusing on known or potential drug-herb interactions.
Archives of internal medicine · 1998 · PMID: 9818800
This information is for educational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider before starting, stopping, or changing any supplement regimen.