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Atorvastatin / ezetimibe Disease Interactions

There are 7 disease interactions with atorvastatin / ezetimibe:

Major

Hmg-Coa Reductase Inhibitors (Includes Atorvastatin/ezetimibe) ↔ Liver Disease

Severe Potential Hazard, High plausibility

Applies to: Liver Disease, Alcoholism

The use of HMG-CoA reductase inhibitors is contraindicated in patients with active liver disease or unexplained, persistent elevations of serum transaminases. HMG-CoA reductase inhibitors are extensively metabolized by the liver. Decreased drug metabolism may lead to accumulation and increased risk of toxicity, including biochemical abnormalities of liver function and, rarely, jaundice, hepatitis, cirrhosis, fatty change in the liver, and fulminant hepatic necrosis. Therapy with HMG-CoA reductase inhibitors should be administered cautiously in patients with a history of liver disease and/or heavy alcohol use. A lower initial dosage may be appropriate, and clinical monitoring of liver transaminase levels according to the individual product package labeling is recommended. Patients who develop elevated ALT or AST levels during therapy should be monitored until abnormalities resolve. If an increase above 3 times the upper limit of normal persists, consideration should be given to a reduction in dosage or withdrawal of therapy.

References

  1. Mauro VF "Clinical pharmacokinetics and practical applications of simvastatin." Clin Pharmacokinet 24 (1993): 195-202
  2. Pan HY, Morrison RA, Singhvi SM, Frantz BM, Waclawski AP, Willard DA "Disposition of pravastatin sodium (SQ 31,000), a tissue-selective HMG-CoA reductase inhibitor, in healthy subjects." Clin Res 36 (1988): a368
  3. "Lovastatin 5-year safety and efficacy study. Lovastatin Study Groups I through IV." Arch Intern Med 153 (1993): 1079-87
View all 41 references
Major

Hmg-Coa Reductase Inhibitors (Includes Atorvastatin/ezetimibe) ↔ Rhabdomyolysis

Severe Potential Hazard, Moderate plausibility

Applies to: Myopathy, Myoneural Disorder, Hypothyroidism, Renal Dysfunction

Severe myopathy, including rhabdomyolysis with acute renal failure secondary to myoglobinuria, has been reported rarely with the use of HMG-CoA reductase inhibitors. The myopathy may be dose-related and is characterized by muscle aches and/or weakness in conjunction with increases in creatine phosphokinase (CPK) values exceeding 10 times the upper limit of normal. Therapy with HMG-CoA reductase inhibitors should be administered cautiously in patients with preexisting myopathy, in those with predisposing factors for myopathy or with a history of myoneural disorder, since it may delay the recognition or confound the diagnosis of a drug-induced musculoskeletal effect. Patients should be advised to report promptly any unusual muscle pain, tenderness or weakness, particularly if accompanied by malaise or fever. Periodic CPK determinations may be considered in some patients, although the value of such monitoring is uncertain. HMG-CoA reductase inhibitor therapy should be withdrawn if markedly elevated CPK levels occur or if drug-related myopathy is diagnosed or suspected.

References

  1. Norman DJ, Illingworth DR, Munson J, Hosenpud J "Myolysis and acute renal failure in a heart-transplant recipient receiving lovastatin." N Engl J Med 318 (1988): 46-7
  2. Vanpuijenbroek EP, Dubufvereijken PWG, Spooren PFMJ, Vandoormaal JJ "Possible increased risk of rhabdomyolysis during concomitant use of simvastatin and gemfibrozil." J Intern Med 240 (1996): 403-4
  3. "Product Information. Zocor (simvastatin)." Merck & Co, Inc, West Point, PA.
View all 33 references
Moderate

Ezetimibe (Includes Atorvastatin/ezetimibe) ↔ Liver Disease

Moderate Potential Hazard, High plausibility

Applies to: Liver Disease

Ezetimibe is partially metabolized in the liver. After a single 10 mg dose, the mean area under the plasma concentration-time curve (AUC) for total ezetimibe was increased approximately 1.7-fold, 3- to 4-fold, and 5- to 6-fold, in patients with mild (Child-Pugh score 5 to 6), moderate (Child-Pugh score 7 to 9), and severe hepatic impairment (Child-Pugh score 10 to 15), respectively, compared to healthy subjects. Due to the unknown effects of increased exposure to ezetimibe in patients with moderate or severe hepatic impairment, therapy with ezetimibe is not recommended in these patients. The combination of ezetimibe with a statin is contraindicated in patients with active liver disease or unexplained persistent elevations in hepatic transaminase levels.

References

  1. "Product Information. Zetia (ezetimibe)." Schering-Plough Corporation, Kenilworth, NJ.
Moderate

Ezetimibe (Includes Atorvastatin/ezetimibe) ↔ Myopathy/Rhabdomyolysis

Moderate Potential Hazard, Moderate plausibility

Applies to: Myopathy

Myopathy and rhabdomyolysis are known adverse reactions to statins and other lipid-lowering drugs. In post-marketing experience with ezetimibe, cases of myopathy and rhabdomyolysis have been reported. Most patients who developed rhabdomyolysis were taking a statin prior to initiating ezetimibe. However, rhabdomyolysis has been reported with ezetimibe monotherapy and with the addition of ezetimibe to agents known to be associated with increased risk of rhabdomyolysis, such as fibrates. In the presence of muscle symptoms and a CPK level >10 × the ULN indicative of myopathy, ezetimibe and any statin or fibrate that the patient is taking concomitantly should be immediately discontinued if myopathy is diagnosed or suspected.

Moderate

Ezetimibe (Includes Atorvastatin/ezetimibe) ↔ Renal Impairment

Moderate Potential Hazard, Moderate plausibility

Applies to: Renal Dysfunction

No dosage adjustment of ezetimibe is necessary in patients with renal impairment. However, when ezetimibe therapy is given in combination with simvastatin in patients with moderate to severe renal impairment (estimated glomerular filtration rate <60 mL/min/1.73 m2), doses of simvastatin exceeding 20 mg should be used with caution and close monitoring is recommended.

Moderate

Hmg-Coa Reductase Inhibitors (Includes Atorvastatin/ezetimibe) ↔ Cognitive Impairment

Moderate Potential Hazard, Moderate plausibility

Applies to: CNS Disorder

Cognitive impairment (e.g., memory loss, forgetfulness, amnesia, memory impairment, confusion) have been observed in patients receiving statins. The reports are usually not serious, and reversible upon statin discontinuation. Caution is recommended when using these agents in patients with cognitive impairment.

Moderate

Hmg-Coa Reductase Inhibitors (Includes Atorvastatin/ezetimibe) ↔ Diabetes

Moderate Potential Hazard, Moderate plausibility

Applies to: Diabetes Mellitus

Increases in HbA1c and fasting serum glucose levels have been reported with the use of certain HMG-CoA reductase inhibitors. Caution should be exercised when using these agents in diabetic patients and close monitoring is recommended.

atorvastatin / ezetimibe drug Interactions

There are 366 drug interactions with atorvastatin / ezetimibe

atorvastatin / ezetimibe alcohol/food Interactions

There is 1 alcohol/food interaction with atorvastatin / ezetimibe

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.

Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.

Do not stop taking any medications without consulting your healthcare provider.

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