Pravastatin Dosing Regimen
The recommended starting dose of pravastatin for adults is 40 mg once daily, with a dosing range of 10-40 mg daily, taken at any time of day with or without food 1.
Standard Adult Dosing
Based on FDA labeling and clinical guidelines, pravastatin dosing follows this framework:
- Starting dose: 40-80 mg once daily 1
- Dosing range: 10-40 mg daily 2
- Timing: Can be taken at any time of day, with or without food 1
- Dose titration: Assess LDL-C as early as 4 weeks after initiation and adjust dosage accordingly 1
Statin Intensity Classification
Pravastatin is classified as a moderate-intensity statin across its dosing range 3, 4, 5:
- Pravastatin 40-80 mg daily: Achieves 30-49% LDL-C reduction (moderate-intensity) 3, 4
- Pravastatin 10-20 mg daily: Achieves <30% LDL-C reduction (low-intensity) 4
Important limitation: Pravastatin cannot achieve high-intensity statin therapy (≥50% LDL-C reduction). For patients requiring high-intensity therapy or unable to reach LDL-C goals on pravastatin 80 mg daily, prescribe an alternative statin such as atorvastatin or rosuvastatin 1.
Special Population Dosing
Chronic Kidney Disease
No dosage adjustment needed for any degree of renal impairment 2. However, for severe renal impairment:
- Starting dose: 10 mg once daily (use another pravastatin formulation to initiate)
- Maximum dose: 40 mg once daily 1
Pediatric Patients (Heterozygous Familial Hypercholesterolemia)
Elderly Patients
Standard dosing applies, though clinical trials have shown that 10-20 mg daily (standard dose) is more effective than 5 mg daily (low dose) in elderly patients for reducing cardiovascular events 6.
Drug Interaction Dosing Modifications
With Immunosuppressants (Transplant Patients)
Limit pravastatin to 40 mg daily when combined with cyclosporine, tacrolimus, everolimus, or sirolimus due to 5-10 fold increase in pravastatin exposure 7.
With Bile Acid Sequestrants
Administer pravastatin at least 1 hour before or at least 4 hours after the bile acid sequestrant 8.
With Other Cardiovascular Medications
- Amiodarone, dronedarone, ranolazine, warfarin, digoxin: No dose adjustment needed; pravastatin can be safely combined 8
Clinical Pearls
Dose-response relationship: Pravastatin demonstrates a linear dose-response for LDL-C reduction, with each doubling of dose producing approximately 3.4% additional LDL-C reduction 9. This is a weaker dose-response slope compared to atorvastatin, rosuvastatin, and other potent statins 9.
Dosing frequency: Once-daily dosing is standard and as effective as twice-daily dosing 10. Alternate-day dosing has been studied but shows inferior total cholesterol reduction compared to daily dosing, though LDL-C reduction may be comparable 11.
Monitoring: Check lipid panel 4 weeks after initiation or dose change 1. Liver enzyme testing should be performed before initiating therapy and as clinically indicated thereafter 1.
Safety profile: Pravastatin has minimal drug interactions due to lack of significant CYP450 metabolism, making it particularly suitable for patients on multiple medications 12, 8.