What Supplements Remove Plaque from Arteries?

No supplement has been proven to clear plaque out of arteries, and none has been shown to prevent heart attacks the way prescription cholesterol medicine does. Several, from aged garlic extract to pomegranate juice, do have small studies showing plaque growing more slowly or shrinking slightly on scans. The changes seen in studies are measured in millimetres and percentages, not in arteries wiped clean.

How Plaque Builds Up and What Shrinking It Takes

Plaque forms when LDL cholesterol, the ‘bad’ cholesterol, slips into the artery wall and the body’s repair and immune cells pile up around it. Over years, the buildup can harden as calcium is laid down in it. Because it sits inside the wall rather than floating in the blood, a supplement can’t flush it out the way a drain cleaner clears a pipe.

When plaque does shrink, three things happen. The fat and dead tissue inside it are cleared away.¹ The damaged inner lining of the artery is repaired.² And the muscle cells that thicken the wall stop multiplying and return to normal behaviour.³ So lowering LDL, cutting inflammation and protecting the artery lining are the routes any supplement would have to work through.

The type of plaque matters as much as the amount. Soft, fatty plaque is the kind more likely to rupture and cause a heart attack, while calcified plaque is harder and generally more stable. Calcium already in plaque is rarely reversed by any treatment, so doctors aim to stop growth and prevent rupture rather than return the artery to a young, clean state.

What Has Been Shown to Shrink Plaque

Statins are the standard medicine for lowering LDL and slowing plaque. In one group of patients, adding the injectable cholesterol drug evolocumab to a statin cut LDL by about three quarters.⁴ About 68% of people on both saw their brain-artery plaque respond, versus about 34% on a statin alone.⁵ Plaque burden fell by about 8% with the combination, versus about 2% on statin alone.⁶

LDL is the raw material plaque is built from, so the lower it goes, the less new fat enters the wall. That is why many doctors set lower LDL targets for people who already have plaque.

Lifestyle steps push in the same direction. Stopping smoking removes a major driver of artery damage. Regular activity and a diet low in saturated fat lower LDL, and controlling blood pressure and blood sugar protects the artery lining.

When a statin isn’t enough, there are other prescriptions. Ezetimibe is a daily pill that blocks cholesterol absorption from the gut, and doctors often add it when a statin alone does not bring LDL low enough. Injectable drugs like evolocumab are usually reserved for people at high risk or whose LDL stays high despite pills.

Most supplement studies are far smaller and shorter than medicine trials, and few track heart attacks. A supplement showing slower growth on a scan is therefore not evidence it can replace a statin.

Aged Garlic Extract

Aged garlic extract is a processed, odourless garlic supplement. In one year-long trial, everyone’s calcium score still rose, but by about 20% a year on garlic extract versus 28% on placebo.⁷ People taking it were about three times as likely to be in the slowest-progression group.⁸ Other year-long trials have reported similar slowing of calcium buildup.⁹

In people with diabetes, low-density soft plaque fell by about 29% on garlic extract while it grew about 57% on placebo.¹⁰ Total plaque volume, though, did not differ between the groups.¹¹ So the extract may shift plaque toward a safer mix rather than remove it.

These studies used a standardised aged extract, not raw garlic. Eating garlic in food hasn’t been tested the same way. Doses differ by brand, so check that the label matches the products that were studied.

Garlic supplements may add to bleeding risk. If you take aspirin, warfarin or similar drugs, tell your doctor, and stop the supplement before surgery if your surgeon advises it.

Pomegranate Juice, Nattokinase and Berberine

Pomegranate juice: Neck artery wall thickness, called carotid intima-media thickness or IMT on ultrasound reports, measures plaque buildup in the neck arteries.
In about 10 people with narrowed neck arteries, a daily glass of pomegranate juice cut wall thickness by up to 30% over a year while untreated people rose about 9%.¹²
In a larger trial of people at moderate heart risk, pomegranate juice did not slow wall thickening overall.¹³
It may have helped only those with the worst blood fats.¹⁴ Pomegranate has practical catches too. Juice carries a lot of sugar, a concern with diabetes. Pomegranate may also affect how some medicines are processed.

Nattokinase is an enzyme from fermented soybeans (natto). In over 1,000 people taking it for a year, neck plaque size fell by up to 36% on average.¹⁵ About one in three people saw no plaque improvement, though.¹⁶ With no placebo group, it’s hard to know how much of the change came from the enzyme.

Nattokinase breaks down clots, so it may raise bleeding risk. Combining it with blood thinners or aspirin needs a doctor’s input, and it is not a substitute for prescribed anti-clot drugs.

Berberine is a plant compound that reduces a gut-bacteria by-product linked to plaque.¹⁷ In 21 people with plaque, 4 months of berberine twice daily lowered plaque score by about 3%.¹⁸

Red Yeast Rice, Bergamot and Omega-3

Red yeast rice naturally contains monacolin K, the same compound as the statin lovastatin. Across trials it lowered LDL by about 21 mg/dL more than placebo in heart attack survivors.¹⁹ Pooled studies also show smaller neck plaque areas and thinner artery walls with it.²⁰ Its benefits and risks therefore resemble those of a low-dose statin.

That means the same muscle aches and liver effects can occur. Monacolin content varies widely between brands, and some products have contained a kidney toxin. Don’t combine it with a prescribed statin.

Citrus bergamot extract lowered LDL and triglycerides over 6 months.²¹ It also shifted LDL toward larger particles and cut the small dense kind by up to about two thirds.²² These are blood changes, not direct proof of plaque shrinking.

In people with heart disease, adding the omega-3 EPA to a statin reduced plaque volume, while the statin alone did not.²³ Other scan studies show omega-3s slowing and stabilising plaque.²⁴

That study used purified EPA, not ordinary mixed fish oil. Over-the-counter fish oil varies in dose and purity, so ask whether a prescription omega-3 suits you.

Vitamin K2 and Vitamin D

Vitamin K switches on a protein that is the body’s chief defence against calcium in artery walls.²⁵ Without this protein, mice die within 2 months from calcified, rupturing arteries.²⁶ Enough vitamin K helps keep calcification low.²⁷

Vitamin K comes in two main forms. K1 is abundant in leafy greens, while K2 comes from fermented foods like natto and some animal foods such as cheese. Studies of artery calcification have focused on K2 because it is thought to stay in the body longer and reach tissues beyond the liver. Since most people get some K1 from vegetables, how much extra K2 adds in a person who eats well is not well established.

In men with high calcium scores of 400 or more, K2 plus vitamin D slowed calcium growth somewhat.²⁸ Even there, calcium scores still rose. One theory holds that high-dose vitamin D without enough vitamin K could leave the calcium blocker inactive.²⁹

Vitamin K directly counteracts warfarin, so anyone on warfarin must not start K2 without their doctor. Newer blood thinners don’t interact this way, but still ask. For everyone else, food sources like natto, cheese and leafy greens are an easy place to start. K2 is reasonable to discuss, but it is not a plaque cure.

Remedies That Haven’t Held Up

An early trial suggested vitamin E cut non-fatal heart attacks in people with heart disease.³⁰ But in over 9,500 high-risk people over about 4.5 years, it made no difference to heart attacks, strokes or deaths.³¹ Vitamins E and C together slowed neck artery thickening only slightly, and only in men.³²

EDTA chelation is an IV drip that binds calcium and metals.³³ Apart from one large trial, studies have been inconsistent.³⁴ No therapy, chelation included, has shown more than minimal reversal of plaque.³⁵ It also takes many IV sessions at real cost, and it can dangerously lower blood calcium. Deaths have been reported when it was given incorrectly.

The vitamin C and lysine protocol comes from case reports and an untested theory.³⁶ CoQ10 improves how well arteries widen,³⁷ which is not the same as shrinking plaque. Curcumin’s benefits on artery lining come mainly from lab research.³⁸

How to Tell Whether Your Plaque Is Changing

A coronary calcium score, or CAC, is a CT scan measure of calcium in heart arteries. Statins can raise it while shrinking the dangerous fatty core of plaque,³⁹ so guidelines say repeat calcium scores aren’t useful for people on statins.⁴⁰ A higher score after treatment can reflect fatty plaque turning into harder, more stable plaque, so it doesn’t by itself mean your treatment failed. A first score is still useful for judging your starting risk and whether treatment is worth pursuing.

Regular LDL blood tests show whether a supplement or medicine is doing its main job. Tell your doctor about every supplement before tests or new prescriptions.

To try a supplement sensibly, get a baseline LDL test first and retest after about 6 to 12 weeks. Stop if the numbers don’t move or side effects appear. Never stop prescribed heart medicine to try a supplement.