HMG-CoA reductase inhibitor (statin)
Rosuvastatin and grapefruit: a real interaction?
Grapefruit is famous as the juice that interacts with medications, and the warning is real for a number of drugs. Whether it matters specifically for Rosuvastatin (Rosuvastatin) at 5mg, 10mg, 20mg, 40mg depends on whether the active ingredient Rosuvastatin is metabolised by CYP3A4 in the gut wall and how much that pathway contributes to first-pass metabolism.
The CYP3A4 mechanism
Grapefruit (and its juice) inhibits CYP3A4 enzymes in the gut wall, increasing the absorbed dose of medications metabolised by that enzyme. For drugs in the HMG-CoA reductase inhibitor (statin) class that go through CYP3A4 first-pass metabolism, regular grapefruit consumption can raise plasma levels of Rosuvastatin by a clinically meaningful margin and amplify side effects.
What to do with Rosuvastatin
According to the prescribing information for Rosuvastatin, if grapefruit is flagged as an interaction, the safest practice is to avoid grapefruit entirely or to discuss timing with the prescriber. Rosuvastatin competitively inhibits HMG-CoA reductase, the rate-limiting enzyme in hepatic cholesterol synthesis. A small occasional serving may be tolerable; daily large servings around the time of Rosuvastatin dosing are not recommended at 5mg, 10mg, 20mg, 40mg.
Frequently asked questions
Can I eat grapefruit while on Rosuvastatin? ▾
For some HMG-CoA reductase inhibitor (statin) medications, grapefruit is best avoided or limited because of CYP3A4 inhibition. Whether Rosuvastatin specifically is affected depends on Rosuvastatin; the prescribing information lists this. When in doubt, ask the pharmacist or check the patient leaflet.
How much grapefruit is too much with Rosuvastatin? ▾
For drugs where the interaction matters, even modest daily grapefruit intake (one whole grapefruit or one large glass of juice) can shift drug levels noticeably. For Rosuvastatin at 5mg, 10mg, 20mg, 40mg, individual tolerance varies; the cautious choice is to avoid grapefruit if any interaction is mentioned.
Products containing Rosuvastatin
More on Rosuvastatin
- With alcoholRosuvastatin and alcohol — is it safe to drink?
- With foodShould Rosuvastatin be taken with food?
- Side effectsRosuvastatin side effects: common, rare and warning signs
- Dosage guideRosuvastatin dosage guide: how much to take and when
- OnsetHow fast does Rosuvastatin start working?
- DurationHow long does Rosuvastatin last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.