alirocumab vs icosapent ethyl
Side-by-side comparison of alirocumab and icosapent ethyl Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Praluent
Vascepa
Praluent is a medicine that can lower cholesterol. It can also lower the risk of heart problems like heart attack or stroke in some adults.
Icosapent ethyl (Vascepa) is a medicine that helps lower very high triglyceride levels in adults. It is used along with a healthy diet.
Praluent is used to lower LDL cholesterol (bad cholesterol). It is used along with diet and exercise in adults with high cholesterol. It is also used in adults and children 8 years and older who have a genetic condition that causes high cholesterol.
This medicine helps lower very high triglyceride levels in adults. You must also follow a healthy diet and exercise plan while taking this medicine. It is for people with triglyceride levels of 500 mg/dL or higher. This medicine's effect on pancreatitis risk is not known.
Praluent is a PCSK9 inhibitor. It works by blocking a protein in your body called PCSK9. Blocking this protein helps your body remove LDL cholesterol from your blood.
Icosapent ethyl is a type of omega-3 fatty acid. It contains EPA, which helps to lower triglyceride levels in your blood. The exact way it works is not fully understood.
- • Injection site reactions (redness, itching, swelling, pain)
- • Flu
- • Muscle pain
- • Diarrhea
- • Muscle or joint pain
- • Swelling in your legs or feet
- • Constipation
- • Gout
- • Irregular heartbeat
- Muscle pain 1,655
- Missed dose 1,364
- Pain at injection site 1,278
- Muscle spasms 1,162
- Joint pain 1,053
- The product smells strange 963
- Problem with the product's appearance 733
- Using the medicine for a purpose it's not approved for 728
- Diarrhea 546
- The medicine is not working 535
Serious allergic reactions have happened with Praluent, sometimes requiring hospitalization. If you have signs of a serious allergic reaction, stop using Praluent and get medical help right away.
This medicine may increase your risk of having an irregular heartbeat (atrial fibrillation or flutter) that requires hospitalization. Your risk may be higher if you have had this condition before. This medicine may also increase your risk of bleeding, especially if you take blood thinners like aspirin, clopidogrel, or warfarin. Tell your doctor if you are allergic to fish or shellfish, as this medicine is made from fish oil.
There is not enough information about Praluent use during pregnancy to know if it is safe. If you are pregnant or plan to become pregnant, talk to your doctor before using Praluent.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine will harm your unborn baby. Talk to your doctor about the risks and benefits of taking this medicine while pregnant or breastfeeding.
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How to Read This alirocumab vs icosapent ethyl Comparison
alirocumab is classified in the PCSK9 Inhibitor drug class, while icosapent ethyl sits within the Omega-3 Fatty Acid (EPA) 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, alirocumab has 6,512 submissions while icosapent ethyl has 3,505. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. 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 alirocumab and icosapent ethyl — 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.