What is the dosage range for Crestor (rosuvastatin)?

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Crestor (Rosuvastatin) Dosage Range

The FDA-approved dosage range for Crestor (rosuvastatin) is 5 mg to 40 mg orally once daily, administered at any time of day with or without food. 1

Standard Dosing Parameters

  • General adult dosing: Rosuvastatin tablets are available in 5 mg, 10 mg, 20 mg, and 40 mg strengths, with the full therapeutic range spanning 5-40 mg once daily 1
  • Typical starting dose: Most patients begin with 10 mg daily, which produces approximately 50% LDL-C reduction 2
  • Dose titration: LDL-C should be assessed as early as 4 weeks after initiation, with dose adjustments made based on response and cardiovascular risk 1

Intensity Classification by Dose

  • Moderate-intensity therapy: Rosuvastatin 5-10 mg daily achieves 30-49% LDL-C reduction 3, 4
  • High-intensity therapy: Rosuvastatin 20-40 mg daily achieves ≥50% LDL-C reduction (approximately 50-63%) and is recommended for adults ≤75 years with established ASCVD 3

Special Population Dosing Restrictions

Asian Patients

  • Initiate at 5 mg once daily due to increased rosuvastatin plasma concentrations in Asian populations 1
  • Consider risks and benefits when treating Asian patients not adequately controlled at doses up to 20 mg daily 1

Severe Renal Impairment

  • Starting dose: 5 mg once daily in patients with CrCl <30 mL/min/1.73 m² not on hemodialysis 1
  • Maximum dose: 10 mg once daily in this population 1
  • No dosage adjustments needed for mild to moderate renal impairment 1

Critical Drug Interaction Dose Limits

Common pitfall: Failing to recognize that certain medications require strict rosuvastatin dose caps to prevent severe myopathy and rhabdomyolysis.

  • 5 mg maximum daily: Cyclosporine, darolutamide 1
  • 10 mg maximum daily: Teriflunomide, enasidenib, capmatinib, gemfibrozil (if concomitant use unavoidable), regorafenib, and certain antivirals (atazanavir/ritonavir, lopinavir/ritonavir) 1
  • 20 mg maximum daily: Fostamatinib, febuxostat, tafamidis (if concomitant use unavoidable), and resmetirom for MASH/NASH 3, 1

Ruxolitinib Interaction

  • Maximum 5 mg daily when combined with ruxolitinib due to 7-fold increase in rosuvastatin exposure through OATP1B1 and P-glycoprotein inhibition 5
  • Switching to higher rosuvastatin doses with ruxolitinib substantially increases myopathy risk; consider pravastatin as a safer alternative 5

Pediatric Dosing

  • Ages 8 to <10 years with HeFH: 5-10 mg once daily 1
  • Ages ≥10 years with HeFH: 5-20 mg once daily 1
  • Ages ≥7 years with HoFH: 20 mg once daily 1

Administration Considerations

  • Swallow tablets whole at any time of day, with or without food 1
  • When taking with aluminum/magnesium hydroxide antacids, administer rosuvastatin at least 2 hours before the antacid 1
  • If a dose is missed, do not double up—resume with the next scheduled dose 1

References

Research

Rosuvastatin: a highly efficacious statin for the treatment of dyslipidaemia.

Expert opinion on investigational drugs, 2002

Guideline

High-Intensity Statin Therapy with Rosuvastatin

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Statin Conversion Guidelines

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Safety of Statin Use with Ruxolitinib

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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