⚠️ Mechanism
Dong Quai is a weak inhibitor of CYP3A4, which decreases metabolism of CYP3A4 substrates, potentially increasing their plasma concentrations and risk of adverse effects.
📋 Effect
Increased plasma levels of ethinylestradiol (oral-contraceptives), potentially leading to toxicity or enhanced adverse effects.
💊 Management
Monitor for increased adverse effects of ethinylestradiol. Dose reduction may be necessary. Consider alternative supplement or consult healthcare provider.
Plain Language Summary
This combination may be unsafe because Dong Quai can cause the levels of hormones in your birth control to increase. This rise in hormone levels could potentially lead to more side effects from your medication.
Source
Flockhart CYP450 Table (drug-interactions.medicine.iu.edu)
Medical Disclaimer: This interaction record is for informational and educational purposes only and does not constitute medical advice. Drug-supplement interactions can be dangerous. Always consult your healthcare provider or pharmacist before combining any supplement with prescription medications. Do not stop or change any medication without professional guidance.