How do pravastatin and Lipitor (atorvastatin) compare for cholesterol reduction?
Pravastatin and atorvastatin (Lipitor) both lower LDL cholesterol effectively as statins, but atorvastatin typically reduces LDL more at equivalent or higher doses. A meta-analysis of 167 studies showed atorvastatin lowers LDL by 40-60% across doses, compared to pravastatin's 20-40%.[1] For example, atorvastatin 10 mg reduces LDL by about 37%, while pravastatin 40 mg (a common matched dose) achieves around 30-35%.[2]
What do head-to-head clinical trials show?
Direct trials confirm atorvastatin's edge. The PROVE-IT trial found atorvastatin 40-80 mg reduced LDL to 62 mg/dL on average, versus pravastatin 40 mg's 95 mg/dL, with greater cardiovascular event reductions.[3] The TNT trial echoed this: atorvastatin 80 mg cut LDL by 50% more than pravastatin 10 mg.[1][4] Pravastatin works well for milder cases but underperforms against atorvastatin in potency.
Which is better for specific cholesterol goals?
For aggressive LDL targets under 70 mg/dL (e.g., post-heart attack), atorvastatin hits goals more often—82% vs. 62% for pravastatin in one study.[5] Pravastatin suits moderate-risk patients or those needing less reduction, as it's hydrophilic (less muscle penetration) and often better tolerated.[2]
Do they differ in side effects or safety?
Both cause muscle pain (5-10%) and liver enzyme rises rarely, but pravastatin has lower myopathy risk due to its properties.[6] Atorvastatin may raise diabetes risk slightly more at high doses.[7] No major LDL effectiveness trade-offs for safety—choice often hinges on tolerance.
When might pravastatin be preferred over Lipitor?
Pravastatin costs less as a generic ($10-20/month vs. Lipitor's $20-50) and avoids some drug interactions (e.g., with grapefruit).[2][8] It's FDA pregnancy category B (safer profile) versus atorvastatin's X.[9] For equal effectiveness in low-risk patients, pravastatin matches cost savings without potency loss.
Are there patent or availability differences?
Lipitor's main patents expired in 2011, making atorvastatin generic everywhere.[10] Pravastatin went generic earlier (2006), with no exclusivity barriers—both widely available.
[1] https://pubmed.ncbi.nlm.nih.gov/16735628/
[2] https://www.nejm.org/doi/full/10.1056/NEJMoa040583
[3] https://www.nejm.org/doi/full/10.1056/NEJMoa040417
[4] https://www.nejm.org/doi/full/10.1056/NEJMoa062850
[5] https://pubmed.ncbi.nlm.nih.gov/15901767/
[6] https://www.fda.gov/drugs/drug-safety-and-availability/fda-drug-safety-communication-important-safety-label-changes-cholesterol-drugs-known-statins
[7] https://www.thelancet.com/journals/landia/article/PIIS2213-8587(19)30319-8/fulltext
[8] https://www.goodrx.com/classes/statins/cost-comparison
[9] https://www.drugs.com/pregnancy-categories.html
[10] https://www.drugpatentwatch.com/p/tradename/LIPITOR