Answer
Substances in St John's wort induce the cytochrome P450 isoenzymes CYP1A2, CYP2C19, CYP2C9 and CYP3A4, as well as the transport protein P-glycoprotein.
Sources for this answer
- Care St John's Wort Low Mood Relief Tablets / UCalm St John's Wort TabletsThornton & Ross Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 2Document updated
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