During treatment with zanubrutinib, strict adherence to dietary restrictions is required to prevent compromised drug efficacy or elevated side effect risks. Grapefruit, star fruit and their products must be strictly avoided, high-fat diets should be limited, alcohol consumption requires caution, and potential drug interactions must be noted. Detailed precautions are as follows:
I. Foods to Strictly Avoid
1. Grapefruit (Pomelo) and Star Fruit
Furanocoumarins in grapefruit inhibit the activity of the liver enzyme CYP3A4, disrupting zanubrutinib metabolism and increasing the risk of drug accumulation. Star fruit may exacerbate renal burden and impair drug excretion.
2. Other Furanocoumarin-Containing Foods
Including pomelos, sour limes, citrus juices and similar products, which may trigger analogous interactions.
II. Dietary Habits to Restrict
1. High-Fat Diets
Clinical trials of zanubrutinib indicate that high-fat meals may reduce drug absorption efficiency. Avoid fried foods, animal offal, cream cakes and other high-fat items.
2. Alcohol
Alcohol may intensify hepatic metabolic stress, especially given the hepatotoxicity risk associated with zanubrutinib. Alcohol consumption is only permissible after consulting a treating physician.
III. Risks of Drug-Drug Interactions
1. CYP3A4 Inhibitors/Inducers
Such as macrolide antibiotics (e.g., erythromycin), antifungal agents (e.g., ketoconazole), antiepileptic drugs (e.g., carbamazepine), etc., which may alter drug efficacy or toxicity profiles.
2. Anticoagulant/Antiplatelet Medications
Zanubrutinib may increase bleeding risk. Close clinical monitoring is mandatory when co-administered with aspirin, warfarin and other similar agents.
IV. Additional Precautions
Infection Prevention
Avoid raw foods (e.g., sashimi, soft-boiled eggs) and unpasteurized dairy products to minimize infection risk.
Bleeding Risk
Reduce intake of hard, sharp foods (e.g., nuts, fish with sharp bones) to prevent mucosal injury and bleeding.
Dosing Timing
Recommended for oral administration on an empty stomach (1 hour before or 2 hours after meals). Dosage adjustment may be made per physician’s instruction if gastrointestinal discomfort occurs.
Regular Monitoring
Routine surveillance of blood routine, liver and renal function is required during treatment. Seek immediate medical attention if symptoms such as fever, abnormal ecchymosis, jaundice, etc., develop.
All dietary and medication adjustments must be implemented under the guidance of a qualified physician. Do not discontinue treatment or modify the dosage without medical authorization.
