What Are They For?
For patients who need additional LDL ("bad" cholesterol) lowering beyond what a statin alone achieves, who don't tolerate statins well, or who need a different mechanism entirely — these medications work through pathways completely separate from statins. They can be used alongside a statin, in place of one, or combined with each other, depending on your specific situation and LDL target.
How They Help (In Plain Terms)
- Ezetimibe works in your gut, blocking absorption of cholesterol from food and bile so less cholesterol enters your bloodstream in the first place. It's a pill, often added to a statin for extra LDL lowering, or used alone if statins aren't tolerated.
- Bempedoic acid works in the liver, through a different enzyme step than statins in that same general cholesterol-production pathway — lowering LDL without directly affecting muscle tissue the way statins can. It's a pill, often considered for people who've had muscle-related side effects with statins.
- PCSK9 inhibitors are injectable medications that block a protein (PCSK9) that normally breaks down your liver's LDL "receptors" — the docking stations that pull LDL cholesterol out of your blood. Blocking PCSK9 leaves more receptors active, pulling significantly more LDL out of circulation. These produce some of the largest LDL reductions available, often used for very high-risk patients or genetically elevated cholesterol (familial hypercholesterolemia).
- Inclisiran works through a newer, related approach (siRNA technology) that reduces your liver's production of the PCSK9 protein itself, achieved with just two injections a year after the initial doses — a very different dosing rhythm from the other options here.
Common Examples
- Ezetimibe (Zetia), and combined with a statin as ezetimibe/simvastatin (Vytorin)
- Bempedoic acid (Nexletol), and combined with ezetimibe as bempedoic acid/ezetimibe (Nexlizet)
- Alirocumab (Praluent) and Evolocumab (Repatha) — PCSK9 inhibitors
- Inclisiran (Leqvio)
Common Side Effects to Know
- Ezetimibe: generally very well tolerated; mild GI upset in some people, rarely muscle symptoms.
- Bempedoic acid: can raise uric acid levels (occasionally triggering gout in susceptible people), and carries a mild increase in risk of tendon problems — mention any new tendon pain to your care team promptly.
- PCSK9 inhibitors: injection-site reactions (redness, itching, mild soreness) are the most common; flu-like symptoms are occasionally reported.
Practical Tips
- Ezetimibe is typically taken once daily, with or without a statin.
- Bempedoic acid is typically taken once daily; your care team may check uric acid levels periodically.
- PCSK9 inhibitors are self-injected at home (similar technique to other subcutaneous injections, typically every 2–4 weeks depending on the specific medication) after training from your care team — rotate injection sites to reduce soreness.
- None of these replace lifestyle measures — diet and exercise still matter alongside any of them (see Heart-Healthy Eating).
- These are often used in combination — for example, a statin plus ezetimibe, or a statin plus a PCSK9 inhibitor — rather than swapped in as a single replacement, since combining different mechanisms often achieves a bigger LDL reduction than any one alone.
What Your Care Team Monitors
Periodic cholesterol panels to see how well your LDL is responding, liver function tests, and — for bempedoic acid specifically — occasional uric acid checks.
Common Questions
Why would I need one of these if I'm already on a statin?
Because your personal LDL target may be lower than what a statin alone achieves, especially if you've already had a heart attack, stroke, or have other high-risk features — additional lowering measurably reduces future risk.
Are PCSK9 inhibitors safe long-term?
Current data is reassuring, though they're newer than statins; your care team weighs your specific risk and benefit.
Will insurance cover a PCSK9 inhibitor?
These are often more expensive and may require prior authorization — see Cost & Insurance Navigation for how to navigate that process.
Can I take ezetimibe or bempedoic acid instead of a statin, not just with one?
Yes, particularly if you can't tolerate a statin — though a statin plus one of these often achieves better LDL lowering than either alone when even a lower statin dose is tolerated.
How much do these actually lower LDL compared to a statin alone?
It varies by combination and individual response, but adding ezetimibe or a PCSK9 inhibitor to a statin commonly achieves substantially more LDL lowering than the statin alone — your care team can give you a realistic expectation based on your starting numbers and your specific combination.