Crestor vs Zetia
Crestor (rosuvastatin) and Zetia (ezetimibe) are both cholesterol-lowering medications that work through different mechanisms. Crestor is the most potent statin, reducing cholesterol production in the liver, while Zetia blocks cholesterol absorption in the intestine. Like other statin-vs-Zetia comparisons, they can be used together for greater LDL reduction.
What Is Crestor?
Crestor (rosuvastatin) is the most potent statin per milligram. It lowers LDL by 50-55% at high doses and has minimal CYP3A4 metabolism, meaning fewer drug interactions than other statins. Available as a generic since 2016.
What Is Zetia?
Zetia (ezetimibe) is a cholesterol absorption inhibitor that blocks cholesterol uptake in the small intestine. Lowers LDL by 18-22% as monotherapy. Available as a generic. Has a lower risk of muscle pain than statins.
Direct Comparison
| Feature | Crestor | Zetia |
|---|---|---|
| Drug class | Statin (HMG-CoA reductase inhibitor) | Cholesterol absorption inhibitor |
| Generic name | Rosuvastatin | Ezetimibe |
| Mechanism | Reduces cholesterol production in liver | Blocks cholesterol absorption in intestine |
| LDL reduction (monotherapy) | 50–55% (high dose) | 18–22% |
| Dosing frequency | Once daily | Once daily |
| Standard dose | 5–40mg daily | 10mg daily |
| Muscle pain risk | Present (statin-related) | Lower than statins |
| Grapefruit interaction | No significant interaction | No |
| Drug interactions | Minimal CYP3A4 interactions | Minimal |
| Generic available | Yes (since 2016) | Yes (since 2017) |
| Cost per month | $4–$30 (generic) | $4–$20 (generic) |
What Is Actually Different?
Crestor is significantly more effective than Zetia for lowering LDL (50-55% vs 18-22%). Both have favorable drug interaction profiles — Crestor has minimal CYP3A4 metabolism and Zetia works independently in the intestine. For patients who cannot tolerate statins due to muscle pain, Zetia may be an alternative, though it is less effective. Combining Crestor with Zetia provides additive LDL reduction, which is useful for patients who need aggressive cholesterol lowering. The choice between Crestor and Zetia depends on whether the patient can tolerate statin therapy and how much LDL reduction is needed.
Frequently Asked Questions
Can Zetia replace Crestor?
Zetia can be used alone for statin-intolerant patients, but it lowers LDL much less effectively (18-22% vs 50-55%). It is not a substitute for statin therapy in most patients.
Can I take Crestor and Zetia together?
Yes. Combining them provides additive LDL reduction. This is common for patients who need aggressive cholesterol lowering.
Does Crestor interact with grapefruit?
No significant interaction. Unlike Lipitor and Zocor, Crestor has minimal CYP3A4 metabolism, so grapefruit is not a major concern.
Which has fewer side effects?
Zetia has a lower risk of muscle pain than Crestor. However, Crestor is more effective at lowering LDL and has fewer drug interactions than other statins.
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