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Turmeric × Calcium Channel Blockers

MODERATE INTERACTION

⚠️ Mechanism

Turmeric is a moderate inhibitor of CYP3A4, which decreases metabolism of CYP3A4 substrates, potentially increasing their plasma concentrations and risk of adverse effects.

📋 Effect

Increased plasma levels of nifedipine (calcium-channel-blockers), potentially leading to toxicity or enhanced adverse effects.

💊 Management

Monitor for increased adverse effects of nifedipine. Dose reduction may be necessary. Consider alternative supplement or consult healthcare provider.

Plain Language Summary

This combination may be unsafe because turmeric can slow down how your body breaks down calcium channel blockers. This can cause the medication to build up in your system, potentially increasing the risk of side effects.

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.