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Hello! My psychiatrist prescribed st johns wart to reduce my depression but then I heard that they can interact with birth control pills. The thing is that I am taking BC pills but I didn’t mention this to my doc. Does anybody know anything about it?

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Hi there! You heard well about st. johns wart. It contains a compound called hyperforin which will increase the drug metabolizing enzyme Cyp3A4. This enzyme is responsible for the metabolism and excretion of MANY drugs, including the estrogen in the pill for preventing ovulation. So, if you take st. john with BC pills it may decrease the estrogen and not prevent ovulation. I heard about several pregnancies that had happened while the women were on both pills and st. johns.
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