Zocor vs. Zetia

See how Zocor and Zetia compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Zocor is a statin that lowers LDL cholesterol and reduces cardiovascular risk, while Zetia works through a different pathway that blocks cholesterol absorption in the gut.

  • Doctors often prescribe Zetia alongside a statin like Zocor when diet and statin therapy alone haven't lowered LDL cholesterol enough.

  • Both drugs are taken once daily by mouth, and generic versions of both are now available at lower cost than their original brand-name prices.

Zocor vs. Zetia Drug Summary

Zocor

Zocor (simvastatin) is a statin that lowers LDL cholesterol and lowers the risk of heart attack, stroke, and death in adults with high cholesterol or heart disease. It's taken once daily as an oral tablet, with doses from 10 mg to 80 mg based on how much LDL lowering is needed.

Zetia

Zetia (ezetimibe) is a cholesterol absorption inhibitor that lowers LDL cholesterol by blocking its uptake in the intestine. It's taken once daily as a 10 mg oral tablet, either alone or combined with a statin or fenofibrate for added LDL lowering.

Zocor vs. Zetia Side Effects

Zocor

Most common
upper respiratory infection (up to 9%)
headache (up to 7%)
abdominal pain (up to 7%)
constipation (up to 7%)

Zetia

Most common
upper respiratory tract infection (up to 4.3%)
diarrhea (up to 4.1%)
arthralgia (up to 3.0%)
sinusitis (up to 2.8%)

Zocor vs. Zetia Dosage

Zocor

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 10 mg once daily At the start
Maximum dose 80 mg once daily If needed
Dose changes 3 increases As tolerated

Zetia

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 10 mg once daily At the start
Maximum dose 10 mg once daily Same as starting
Dose changes None Fixed dose

Zocor vs. Zetia Indications

Zocor

Zocor is an HMG-CoA reductase inhibitor approved to lower LDL cholesterol and reduce cardiovascular risk in adults with high cholesterol or existing heart disease. It's also approved to treat certain inherited high cholesterol conditions in adults and children over 10.

  • Lowers LDL cholesterol in adults with high cholesterol

  • Treats heterozygous familial hypercholesterolemia (ages 10+)

  • Used as add-on therapy for homozygous familial hypercholesterolemia

  • Reduces risk of heart attack, stroke, and death in high-risk adults

Zetia

Zetia is a cholesterol absorption inhibitor approved to lower LDL cholesterol on its own or combined with a statin or fenofibrate. It's also approved for adults and children over 10 with certain inherited high cholesterol conditions.

  • Lowers LDL cholesterol alone or combined with a statin

  • Treats heterozygous familial hypercholesterolemia with a statin (10+)

  • Lowers LDL in mixed hyperlipidemia combined with fenofibrate

  • Treats homozygous familial hypercholesterolemia combined with a statin

Zocor vs. Zetia Pros and Cons

Zocor

Zocor has decades of outcome data showing it lowers cardiovascular risk, not just cholesterol numbers, and is available as an affordable generic. Because it's a statin, it carries the class-wide risks of muscle-related side effects and drug interactions.

Pros

  • Reduces risk of heart attack, stroke, and death, not just LDL numbers

  • Decades of long-term outcome data since 1991

  • Flexible once-daily dosing from 10 mg to 80 mg

Cons

  • Carries risk of muscle pain and rhabdomyolysis, especially at 80 mg

  • Interacts with many common medications through CYP3A4

  • Contraindicated in pregnancy

Zetia

Zetia offers a different mechanism than statins, making it useful as an add-on when statin therapy alone doesn't lower LDL enough. It has a simple fixed dose and a lower risk of muscle-related side effects, though it lacks strong evidence for reducing cardiovascular events on its own.

Pros

  • Works through a different mechanism, useful when statins aren't enough alone

  • Single fixed 10 mg dose, no titration needed

  • Fewer muscle-related side effects than statins when used alone

Cons

  • No direct evidence it reduces heart attack or stroke risk on its own

  • Not approved as monotherapy for homozygous familial hypercholesterolemia

  • Risk of liver enzyme elevation increases when combined with a statin

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