Pravastatin vs Simvastatin

Both statins reduce LDL cholesterol, but simvastatin is more potent at comparable doses ^[2][3]. Simvastatin 40 mg reduces LDL by approximately 37-41%, while pravastatin 40 mg reduces LDL by approximately 30-34% ^[1][2]. Neither is as potent as atorvastatin or rosuvastatin.

Both have demonstrated cardiovascular outcomes benefits. The Scandinavian Simvastatin Survival Study (4S) showed simvastatin reduced total mortality by 30% and cardiovascular death by 42% in patients with coronary heart disease ^[3]. The Heart Protection Study (HPS) showed simvastatin reduced major vascular events by 25% ^[3].

Pravastatin reduced coronary events by 31% in the WOSCOPS primary prevention trial and by 24% in the CARE secondary prevention trial ^[4]. Both medications have solid evidence supporting their cardiovascular benefits.

Current guidelines generally recommend high-intensity statins (atorvastatin 40-80 mg or rosuvastatin 20-40 mg) for high-risk patients, which has shifted prescribing away from moderate-intensity statins like simvastatin and pravastatin ^[5].

Muscle-related side effects (myalgia, myopathy, rhabdomyolysis) are a concern with all statins, but the risk differs between these two ^[1][2].

Simvastatin at 80 mg carries a significantly elevated risk of myopathy (0.9% per year), leading the FDA to restrict this dose to patients already tolerating it for 12+ months ^[2]. At 40 mg, the risk is lower but still present. Simvastatin's CYP3A4 metabolism means numerous drugs can increase its blood levels and muscle risk: amiodarone, amlodipine, diltiazem, verapamil, strong CYP3A4 inhibitors (clarithromycin, ketoconazole, HIV protease inhibitors), and grapefruit juice ^[2].

Pravastatin has the lowest muscle-related side effect risk among commonly used statins ^[1]. It is not metabolized by CYP3A4, so the drug interaction concerns that plague simvastatin are largely absent ^[1]. This makes pravastatin particularly useful for patients on complex medication regimens.

Other shared statin side effects include elevated liver enzymes (rare), headache, GI upset, and a small increased risk of new-onset diabetes ^[1][2].

Both are available as very affordable generics. Pravastatin costs $5-$15 per month ^[6]. Simvastatin costs $4-$12 per month ^[6]. Both are among the least expensive statins available.

Both are once-daily medications typically taken in the evening (statins are slightly more effective when taken at night because cholesterol synthesis peaks overnight) ^[1][2]. Pravastatin can be taken without regard to food, while simvastatin should be taken in the evening ^[1][2]. Both are simple oral tablets.

In modern practice, both pravastatin and simvastatin have been largely superseded by atorvastatin and rosuvastatin for patients requiring significant LDL lowering ^[5].

Pravastatin remains useful for patients who need a statin with minimal drug interactions (e.g., patients on calcium channel blockers, amiodarone, or other CYP3A4-affecting drugs) and patients who have experienced muscle side effects with other statins ^[1].

Simvastatin remains appropriate for patients already stable on it at doses of 40 mg or less. The 80 mg dose should generally be avoided due to myopathy risk ^[2].

If more potent LDL lowering is needed, atorvastatin or rosuvastatin is typically preferred over increasing the dose of either pravastatin or simvastatin ^[5].

This information is for educational purposes only. Consult your healthcare provider for statin selection.