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gemfibrozil vs simvastatin

Side-by-side comparison of gemfibrozil and simvastatin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

major Known Drug Interaction

Cyclosporine, Danazol, or Gemfibrozil Clinical Impact: The risk of myopathy and rhabdomyolysis is increased with concomitant use of cyclosporine, danazol, or gemfibrozil with ezetimibe and simvastatin. Gemfibrozil may cause myopathy when given alone. Intervention: Concomitant use of cyclosporine, danazol, or gemfibrozil with ezetimibe and simvastatin is contraindicated [see Contraindications ( 4 )].

Recommendation: Do not take these two medicines together; your doctor will need to find an alternative treatment.

Drug Class
gemfibrozil Fibrate
simvastatin HMG-CoA Reductase Inhibitor (Statin)
Type
gemfibrozil Prescription
simvastatin Prescription
Summary
gemfibrozil

Gemfibrozil is a medicine that helps lower high triglyceride levels in your blood. It can also help reduce the risk of heart disease in some people.

simvastatin

No summary available.

What It Treats
gemfibrozil

This medicine is used to treat very high triglyceride levels in adults when diet alone doesn't work. High triglycerides can increase your risk of pancreatitis. Gemfibrozil can also lower the risk of heart disease in some people with specific cholesterol problems.

simvastatin

Information not available.

How It Works
gemfibrozil

Gemfibrozil belongs to a class of drugs called fibrates. It works by decreasing the amount of triglycerides your body makes. It also helps to increase HDL (good) cholesterol.

simvastatin

Information not available.

Common Side Effects
gemfibrozil
  • Upset stomach
  • Indigestion
  • Abdominal pain
simvastatin
  • Headache
  • Upper respiratory tract infection
  • Muscle pain
  • Diarrhea
FAERS Reports
gemfibrozil
  • Feeling sick to your stomach 882
  • Feeling tired 826
  • Loose stools 726
  • Aches 692
  • Feeling lightheaded 617
simvastatin
  • Tiredness 13,573
  • Feeling sick to your stomach 12,944
  • Shortness of breath 12,429
  • Diarrhea 11,813
  • Feeling lightheaded 10,971
Serious Warnings
gemfibrozil

This medicine may increase your risk of gallbladder problems, including the need for surgery. Before taking gemfibrozil, tell your doctor if you have liver or kidney problems. You should not take this medicine with simvastatin, repaglinide, dasabuvir, or selexipag.

simvastatin

No specific warnings noted.

Pregnancy
gemfibrozil

Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. It is not known if gemfibrozil can harm your unborn baby. It is also not known if gemfibrozil passes into breast milk.

simvastatin

No pregnancy information available.

Also Compare, Nearby Drugs

How to Read This gemfibrozil vs simvastatin Comparison

gemfibrozil is classified in the Fibrate drug class, while simvastatin sits within the HMG-CoA Reductase Inhibitor (Statin) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, gemfibrozil has 3,743 submissions while simvastatin has 61,730. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known major interaction flagged in FDA labeling, attributed to both drugs can cause muscle damage on their own, and taking them together greatly increases the risk of severe muscle breakdown.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between gemfibrozil and simvastatin - always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.