Can You Switch from Lipitor to Crestor?
Yes, you can switch from Lipitor (atorvastatin) to Crestor (rosuvastatin), both statins used to lower cholesterol. Doctors often make this change for better LDL reduction, fewer side effects, or cost reasons. Crestor typically lowers LDL more potently at equivalent doses—10 mg Crestor matches about 20-40 mg Lipitor—but your doctor will adjust based on your lipid levels, tolerance, and risks like liver function or drug interactions.[1]
How Do Doctors Decide When to Switch?
Switches happen if Lipitor isn't hitting target cholesterol goals, causes muscle pain (myalgia), or interacts with other meds. Crestor has a longer half-life, so it may suit patients missing doses. Start with a lower equivalent dose (e.g., Lipitor 40 mg to Crestor 20 mg) and recheck lipids in 4-6 weeks. No washout period needed; stop Lipitor and start Crestor the next day.[1][2]
Dose Equivalents for Switching
| Lipitor (Atorvastatin) | Crestor (Rosuvastatin) Equivalent |
|-------------------------|-----------------------------------|
| 10 mg | 5 mg |
| 20 mg | 5-10 mg |
| 40 mg | 10-20 mg |
| 80 mg | 20-40 mg |
These are approximate; high-intensity Crestor (20-40 mg) cuts LDL by 50-60%, vs. Lipitor's 40-50% at max dose.[2]
What Are Common Side Effects During the Switch?
Both cause muscle aches (5-10% of users), headache, nausea, or elevated liver enzymes. Crestor may raise blood sugar slightly more and has a rare diabetes risk at high doses. Switching doesn't eliminate risks—monitor creatine kinase for rhabdomyolysis. Report new symptoms immediately.[1][3]
Are There Risks or Interactions to Watch?
Higher Crestor doses increase myopathy risk, especially with fibrates, cyclosporine, or grapefruit juice. Asian patients may need half the dose due to slower metabolism. No major issues switching statins directly, but get baseline liver tests.[3]
Cost and Availability Differences
Generic Lipitor costs $10-20/month; generic Crestor is similar now. No insurance issues for switching, but check copays. Patents expired: Lipitor in 2011, Crestor in 2016.[4]
When Should You Not Switch?
Avoid if Crestor worsens side effects, you have active liver disease, or pregnancy/breastfeeding. Consult your doctor—don't self-switch.
[1] American College of Cardiology statin guidelines (https://www.acc.org/latest-in-cardiology/ten-points-to-remember/2018/11/09/14/28/2018-guideline-on-management-of-blood-cholesterol)
[2] UpToDate: Statin dose comparisons (https://www.uptodate.com/contents/statin-dose-intensity)
[3] FDA Crestor label (https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/021366s020lbl.pdf)
[4] DrugPatentWatch.com (https://www.drugpatentwatch.com/p/tradename/LIPITOR; https://www.drugpatentwatch.com/p/tradename/CRESTOR)