05. Statin Equivalency and Effect

Resident Editor: Lulu Tsao, MD

Faculty Editor: Soraya Azari, MD

Doses of Statins (mg) Required to Achieve Various Reductions in LDL-C From Baseline

Percent Reduction in LDL Cholesterol§

 

20-25%

26-30%

31-35%

36-40%

41-50%

51-55%

56-60%

Statin Intensity*

Low

Low

Mod

Mod

Mod

High

High

Lovastatin, Pravastatin

10

20

40

80

 

 

 

Fluvastatin

20

40

80

 

 

 

 

Pitavastatin

 

1

2

4

 

 

 

Simvastatinx

--

10

20

40

80

 

 

Atorvastatin

--

--

10

20

40+

80

 

Rosuvastatin

--

--

--

5

10

20

40

Vytorin**

--

--

--

10/10

10/20

10/40

10/80

* 2013 ACC/AHA guidelines: high-intensity statin lowers cholesterol by >50%, moderate-intensity statin lowers cholesterol by 30-50%, low-intensity statin lowers cholesterol by <30%. All patients age 21-75 with any form of CVD, or LDL-C ≥ 190, should be given high-intensity statin unless they have clinical features that might predispose them to statin toxicity (i.e., serious co-morbidities such as renal or liver dz, hx statin intolerance, ALT >3xULN, drug interactions). Patients with CVD over 75 years old or unable to tolerate high-intensity statin should be on moderate-intensity statin. All patients with DM (age 40-75) with LDL-C 70-189, without known CVD, should receive moderate-intensity statin, or if 10-year risk by ASCVD risk calculator is > 7.5%, high-intensity statin. Patients age 40-75 without diabetes or CVD, but with LDL-C 70-189 and 10-year risk >7.5%, should consider a moderate-to-high intensity statin.

+ Atorvastatin 40-80mg considered high intensity. Avoid atorvastatin with glecaprevir/pibrentasvir (Mavyret) for HCV.

** 10 mg ezetimibe§ plus 10, 20, 40 or 80mg simvastatin. Vytorin not included in statin intensity charts

§ 2017 guidelines from ACC recommend considering non-statin therapies to achieve ≥50% LDL-C reduction (or LDL <70) for patients with clinical ASCVD who are already on maximally tolerated statin. First review adherence given estimates that ~50% of patients poorly adhere. Following that, combining ezetimibe, 10 mg/day, adds up to 25% additional LDL-C lowering. In patients who require more lowering, a PCSK9 inhibitor may be considered.

 

x FDA recommends that healthcare professionals should maintain patients on simvastatin 80mg only if they have been taking this dose for >12 months without evidence of muscle toxicity; do not start new patients on simvastatin 80mg or escalate to this dose.

x Do not exceed 10 mg simvastatin daily with diltiazem, verapamil.

x Do not exceed 20 mg simvastatin daily with amiodarone, amlodipine, ranolazine

x Avoid simvastatin with glecaprevir/pibrentasvir (Mavyret) for HCV.

References:

Adapted from Goodman & Gilman’s The Pharmacologic Basis of Therapeutics, Chapter 31, McGraw Hill, 2010

FDA Drug Safety Communication (updated December 15, 2017), from http://www.fda.gov/drugs/drugsafety/ucm256581.htm

Stone NJ, Robinson JG, Lichtenstein AH, et al. 2013 ACC/AHA guideline on the treatment of blood cholesterol to reduce atherosclerotic cardiovascular risk in adults: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines. Circulation 2014;129:S1-45.

Lloyd-Jones DM, Morris PB, Ballantyn CM, et. al. 2017 Focused Update of the 2016 ACC Expert Consensus Decision Pathway on the Role of Non-Statin Therapies for LDL-Cholesterol Lowering in the Management of Atherosclerotic Cardiovascular Disease Risk: A Report of the American College of Cardiology Task Force on Expert Consensus Decision Pathways. J Am Coll Cardiol 2017;70(14):1785-1822.