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Grapefruit + Lovastatin

MAJOR — Use With Caution

🔴 MAJOR — Do NOT combine grapefruit with Lovastatin.

Evidence level: STRONG

What this interaction means

Grapefruit can increase lovastatin levels many-fold, dramatically raising the risk of severe muscle damage.

How it works (mechanism)

Furanocoumarins in grapefruit irreversibly inhibit intestinal CYP3A4, increasing lovastatin bioavailability dramatically and raising risk of rhabdomyolysis.

Practical advice

Completely avoid grapefruit and grapefruit juice while taking lovastatin. Ask about switching to pravastatin or rosuvastatin.

Timing

Take Lovastatin 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.

Risk factors

Elderly, high-dose statin users, kidney or liver disease

Symptoms to watch for

Unexplained muscle pain, dark urine, extreme fatigue

What to tell your doctor

Request a statin not metabolized by CYP3A4

Safer alternatives

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.

Frequently asked questions

Can I take Grapefruit and Lovastatin together?

Grapefruit can increase lovastatin levels many-fold, dramatically raising the risk of severe muscle damage.

When should I take Grapefruit vs Lovastatin?

Take Lovastatin 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.

What symptoms should I watch for if I combine Grapefruit and Lovastatin?

Unexplained muscle pain, dark urine, extreme fatigue

Are there safer alternatives to combining Grapefruit with Lovastatin?

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.

What should I tell my doctor about taking Grapefruit and Lovastatin?

Request a statin not metabolized by CYP3A4

Explore more interactions

All Grapefruit interactions →See every known interaction with GrapefruitAll Lovastatin interactions →See every known interaction with Lovastatin

Or browse the full interaction database (121,000+ pairs).