MODERATE — Monitor Closely
🟡 MODERATE — Limit grapefruit intake with Atorvastatin.
Evidence level: STRONG
Grapefruit can nearly double atorvastatin levels. While less severe than with simvastatin, this still meaningfully increases risk of muscle side effects.
Grapefruit inhibits CYP3A4, increasing atorvastatin levels by ~80%. Less dramatic than simvastatin but still clinically significant.
Limit grapefruit to small amounts (half a fruit or 200ml juice) and not daily. Monitor for muscle pain. Consider switching statins if you eat grapefruit regularly.
Take Atorvastatin in the evening. CRITICAL: Grapefruit and grapefruit juice inhibit CYP3A4 and can dramatically increase blood levels of atorvastatin, lovastatin, and simvastatin — this raises rhabdomyolysis risk. Pravastatin and rosuvastatin are less affected. Grapefruit can be consumed normally unless it is grapefruit.
High-dose atorvastatin users, elderly, kidney disease
Muscle pain or weakness, dark urine
Discuss whether your grapefruit intake warrants a statin switch
Statin interactions often involve liver enzyme competition. Ask your doctor about alternative statins (rosuvastatin and pravastatin have fewer CYP interactions) or spacing doses 12 hours apart. CoQ10 supplementation may help with statin-related muscle discomfort.
Grapefruit can nearly double atorvastatin levels. While less severe than with simvastatin, this still meaningfully increases risk of muscle side effects.
Take Atorvastatin in the evening. CRITICAL: Grapefruit and grapefruit juice inhibit CYP3A4 and can dramatically increase blood levels of atorvastatin, lovastatin, and simvastatin — this raises rhabdomyolysis risk. Pravastatin and rosuvastatin are less affected. Grapefruit can be consumed normally unless it is grapefruit.
Muscle pain or weakness, dark urine
Statin interactions often involve liver enzyme competition. Ask your doctor about alternative statins (rosuvastatin and pravastatin have fewer CYP interactions) or spacing doses 12 hours apart. CoQ10 supplementation may help with statin-related muscle discomfort.
Discuss whether your grapefruit intake warrants a statin switch
Or browse the full interaction database (121,000+ pairs).