⚠️ Mechanism
Grapefruit is a strong inhibitor of CYP3A4, which decreases metabolism of CYP3A4 substrates, potentially increasing their plasma concentrations and risk of adverse effects.
📋 Effect
Increased plasma levels of carbamazepine (anticonvulsants), potentially leading to toxicity or enhanced adverse effects.
💊 Management
Monitor for increased adverse effects of carbamazepine. Dose reduction may be necessary. Consider alternative supplement or consult healthcare provider.
Plain Language Summary
This interaction is dangerous because grapefruit can prevent your body from breaking down certain anticonvulsant medications properly. This causes the medication to build up to unsafe levels in your system, which can increase the risk of serious side effects.
Source
Flockhart CYP450 Table (drug-interactions.medicine.iu.edu)