MODERATE — Monitor Closely
🟡 CAUTION — Grapefruit can increase buspirone levels up to 9-fold by inhibiting CYP3A4. Avoid grapefruit while taking buspirone.
Evidence level: STRONG
Grapefruit can increase buspirone levels up to 9 times normal. This significantly increases drowsiness and dizziness.
Grapefruit inhibits CYP3A4, dramatically increasing buspirone bioavailability (up to 9-fold increase in AUC reported).
Avoid grapefruit and grapefruit juice while taking buspirone. The interaction is very significant.
Be consistent with how you take Buspirone relative to meals — take it with food or without food consistently each day. Grapefruit — sudden large changes in diet composition can affect how your body processes many medications. Grapefruit, leafy greens, and high-fiber foods are the most common food-drug interaction culprits.
Higher risk for: elderly, those with liver or kidney impairment, polypharmacy (5+ medications), recent medication changes, or those with multiple chronic conditions. Consult your pharmacist for specific risk factors.
Excessive drowsiness, dizziness, headache, nausea.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Adjust the timing or quantity of Grapefruit relative to your medication. Maintain consistent daily intake rather than large sporadic amounts. Your pharmacist can advise on specific timing windows.
Grapefruit can increase buspirone levels up to 9 times normal. This significantly increases drowsiness and dizziness.
Be consistent with how you take Buspirone relative to meals — take it with food or without food consistently each day. Grapefruit — sudden large changes in diet composition can affect how your body processes many medications. Grapefruit, leafy greens, and high-fiber foods are the most common food-drug interaction culprits.
Excessive drowsiness, dizziness, headache, nausea.
Adjust the timing or quantity of Grapefruit relative to your medication. Maintain consistent daily intake rather than large sporadic amounts. Your pharmacist can advise on specific timing windows.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Or browse the full interaction database (121,000+ pairs).