Herbs and Supplements for High Cholesterol: What Lowers LDL and by How Much
The supplements with the best evidence for lowering cholesterol are red yeast rice, berberine and psyllium husk, followed by bergamot, artichoke leaf and garlic. Red yeast rice lowers LDL by about 39 mg/dL (1.0 mmol/L) in pooled trials, which is roughly what a low dose of a statin does, because it contains the same molecule: monacolin K is chemically identical to lovastatin. Berberine lowers LDL by around 25 mg/dL and triglycerides by 44 mg/dL, and 10 g/day of psyllium takes a further 13 mg/dL (about 6%) off LDL. For triglycerides specifically, 2–4 g/day of omega-3 is the clear leader, cutting them by 20–30%.
This guide is for adults with mildly or moderately raised LDL (130–190 mg/dL, 3.4–4.9 mmol/L) and low-to-intermediate cardiovascular risk who have been told to try lifestyle first, and for people who cannot tolerate statins and want to know what the alternatives are actually worth. If your LDL is above 190 mg/dL, you have had a heart attack or stroke, you have diabetes with other risk factors, or familial hypercholesterolaemia runs in your family, you need a clinician and almost certainly a prescribed drug. Statins have reduced heart attacks and deaths in hundreds of thousands of trial participants; the supplements below have mostly been tested on blood numbers, not on events.
A fasting or non-fasting lipid panel before you start and 8–12 weeks after is essential. LDL is the number that matters for most people, with non-HDL cholesterol a close second; small changes in HDL are not worth chasing.
Quick answer
- Red yeast rice — LDL down ~39 mg/dL in a 20-trial meta-analysis; it contains lovastatin, so it carries statin cautions
- Berberine — LDL down ~25 mg/dL and triglycerides ~44 mg/dL across 11 RCTs at 0.9–1.5 g/day
- Psyllium husk — 10 g/day lowers LDL ~13 mg/dL (6%) in a 28-trial meta-analysis
- Omega-3 (EPA+DHA) — 2–4 g/day cuts triglycerides 20–30%; 4 g EPA reduced cardiac events 25% in REDUCE-IT
- Bergamot extract — LDL down ~20–25 mg/dL in mostly small, open-label trials
- Artichoke leaf — LDL down ~15 mg/dL and total cholesterol ~18 mg/dL across 9 RCTs
The 9 best herbs and supplements for cholesterol
Ranked by the strength of human evidence. Strong = multiple trials or a meta-analysis. Moderate = a few small trials. Preliminary = early or animal data.
Red yeast rice
Strong evidenceRed yeast rice works because it contains monacolin K, which is lovastatin, a prescription statin. A 2015 meta-analysis of 20 randomised trials found it lowered LDL by 1.02 mmol/L (39 mg/dL) versus placebo and was not significantly different from low-to-moderate dose statins. The one outcome trial, China's 4,870-patient Xuezhikang study, found a 45% reduction in coronary events over 4.5 years after a heart attack. The problem is the product: a 2010 analysis of 12 US brands found monacolin K ranging from 0.3 to 11 mg per capsule, and 4 contained citrinin, a kidney toxin. You are taking an unlabelled statin of unknown dose.
- Key evidence
- 2015 meta-analysis of 20 RCTs (Gerards et al., Atherosclerosis); Xuezhikang outcome trial, n=4,870 (Lu et al., 2008)
- Studied dose
- 1,200–2,400 mg/day of a tested product (historically 5–10 mg/day of monacolin K; EU products are now limited to under 3 mg), with dinner, 8–12 weeks
- Best for
- People who need a statin-sized LDL reduction, will not take a statin, and accept they are taking a statin anyway
- Cautions
- Same muscle pain, rhabdomyolysis and liver-enzyme risks as lovastatin, with the same interactions: grapefruit, clarithromycin, itraconazole, cyclosporine, fibrates, niacin and other statins. Avoid in pregnancy, breastfeeding, liver disease and alongside a prescribed statin; check liver enzymes and report muscle pain.
Berberine
Strong evidenceBerberine raises the number of LDL receptors on liver cells by stabilising their messenger RNA, a mechanism separate from statins that makes the two complementary. A 2013 meta-analysis of 11 randomised trials (874 participants) found total cholesterol fell by 0.61 mmol/L (24 mg/dL), LDL by 0.65 mmol/L (25 mg/dL) and triglycerides by 0.50 mmol/L (44 mg/dL), with a small rise in HDL. The effect appears within 4 weeks and plateaus by 12. It also lowers glucose, which makes it a natural fit for people with metabolic syndrome.
- Key evidence
- 2013 meta-analysis of 11 RCTs, 874 participants (Dong et al., Planta Medica)
- Studied dose
- 500 mg of berberine HCl 2–3 times daily with meals, 8–12 weeks
- Best for
- High LDL plus high triglycerides or raised blood sugar; statin-intolerant patients, or as an add-on to a low statin dose
- Cautions
- Inhibits CYP3A4 and CYP2D6 and P-glycoprotein, raising levels of simvastatin, atorvastatin, cyclosporine, some blood-pressure and heart-rhythm drugs; constipation is common. Avoid in pregnancy, breastfeeding and infants.
Psyllium's viscous fibre binds bile acids in the gut, forcing the liver to pull cholesterol from the blood to make more. A 2018 meta-analysis of 28 trials found a median dose of 10.2 g/day for at least 3 weeks lowered LDL by 0.33 mmol/L (13 mg/dL, about 6%), non-HDL cholesterol by 0.39 mmol/L and apolipoprotein B by 5%, with the same effect on top of a statin as alone. The FDA allows a heart-disease health claim at 7 g/day. It is the cheapest, safest item on this list and the one most people should start with.
- Key evidence
- 2018 meta-analysis of 28 RCTs (Jovanovski et al., Am J Clin Nutr)
- Studied dose
- 5 g of psyllium husk in a full glass of water before 2 meals (10 g/day), ongoing
- Best for
- Anyone with raised LDL, especially alongside a statin or with constipation or high blood sugar
- Cautions
- Take with plenty of water; it can reduce the absorption of medicines taken at the same time (levothyroxine, digoxin, lithium, carbamazepine), so separate by 2 hours. Avoid with swallowing difficulties or bowel narrowing.
Omega-3 (EPA and DHA)
Strong evidenceOmega-3 does not lower LDL (DHA may nudge it up slightly) but it is the most effective supplement for triglycerides. The American Heart Association's 2019 advisory concludes that 4 g/day of prescription-strength EPA and DHA lowers triglycerides by 20–30% in people with levels of 150–499 mg/dL and by over 30% above 500 mg/dL. In REDUCE-IT, 4 g/day of purified EPA (icosapent ethyl) reduced major cardiovascular events by 25% over 4.9 years in 8,179 statin-treated patients with high triglycerides, although a mineral-oil placebo has made the size of that benefit contested.
- Key evidence
- REDUCE-IT RCT, n=8,179 (Bhatt et al., NEJM 2019); AHA science advisory on omega-3 for hypertriglyceridaemia, 2019
- Studied dose
- 2–4 g/day of combined EPA+DHA (or EPA alone) from a concentrated fish or algal oil, with a fat-containing meal, 12 weeks
- Best for
- Triglycerides above 150 mg/dL, especially with diabetes or existing heart disease
- Cautions
- At 3 g/day or more it increases bleeding tendency with warfarin, DOACs and antiplatelets, and high-dose EPA raised the rate of atrial fibrillation in outcome trials. Check with your prescriber if you have a heart-rhythm problem; stop a week before surgery.
Bergamot's flavonoids (brutieridin and melitidin) inhibit HMG-CoA reductase weakly, the same enzyme statins block, and also appear to reduce LDL particle number. A 2020 systematic review of 12 human studies found LDL reductions of roughly 20–25 mg/dL and triglycerides of 15–30 mg/dL at 500–1,000 mg/day over 30 days to 6 months. The honest caveat is that most of those studies were open-label or from a single Italian group, and the placebo-controlled trials are small. Promising, not proven.
- Key evidence
- 2020 systematic review of 12 human studies (Lamiquiz-Moneo et al.); small Italian RCTs of bergamot polyphenolic fraction
- Studied dose
- 500–1,000 mg/day of a bergamot polyphenolic fraction standardised to 25–40% flavonoids, 8–12 weeks
- Best for
- Moderate LDL elevation in someone with metabolic syndrome who wants to avoid statins; add-on for partial statin responders
- Cautions
- May add to the muscle effects of statins in theory, and lowers glucose, so watch for hypoglycaemia with diabetes drugs. No pregnancy data; bergamot oil (the fragrance) is a different product and is phototoxic on skin.
Artichoke leaf (Cynara scolymus) increases bile flow and its luteolin content inhibits cholesterol synthesis. A 2018 meta-analysis of 9 randomised trials (702 participants) found total cholesterol fell by 17.6 mg/dL, LDL by 14.9 mg/dL and triglycerides by 9.2 mg/dL versus placebo, with the largest effects in people whose starting cholesterol was higher. A typical trial gave 1,280 mg/day of extract for 12 weeks to 75 adults with mild hypercholesterolaemia and saw a 4.2% drop in total cholesterol against a 1.9% rise on placebo.
- Key evidence
- 2018 meta-analysis of 9 RCTs, 702 participants (Sahebkar et al.)
- Studied dose
- 1,280–1,800 mg/day of a dried leaf extract, in 2–3 divided doses with meals, 6–12 weeks
- Best for
- Mild LDL elevation with bloating or sluggish digestion, since it also improves dyspepsia symptoms
- Cautions
- Avoid with gallstones or bile-duct obstruction, because it stimulates bile flow. Possible allergy in people sensitive to ragweed, daisies and chrysanthemums.
Garlic's sulphur compounds inhibit cholesterol synthesis modestly. A 2013 meta-analysis of 39 trials found total cholesterol fell by 17 mg/dL and LDL by 9 mg/dL in people with total cholesterol above 200 mg/dL who took garlic for longer than 2 months; HDL rose slightly and triglycerides did not change. Shorter trials and trials in people with normal cholesterol show nothing, which explains the mixed headlines. Its bigger payoff is blood pressure, so it suits people with both problems.
- Key evidence
- 2013 meta-analysis of 39 RCTs (Ried, Toben, Fakler; Nutrition Reviews)
- Studied dose
- 600–1,200 mg/day of aged garlic extract or garlic powder (equivalent to 1–2 cloves), for at least 8–12 weeks
- Best for
- Mild hypercholesterolaemia together with high blood pressure
- Cautions
- Increases bleeding with warfarin, aspirin, clopidogrel and NSAIDs; stop 7–10 days before surgery. May reduce levels of saquinavir and some other antivirals.
Green tea catechins reduce cholesterol absorption from the gut. A 2020 meta-analysis of 31 randomised trials (3,321 participants) found green tea or its extract lowered total cholesterol by 4.7 mg/dL and LDL by 4.6 mg/dL, with no change in HDL or triglycerides. That is a small effect, roughly a third of psyllium's, and it was slightly larger in people with higher starting LDL and in trials of 12 weeks or more. It earns a place because many people drink it anyway, and swapping it in costs nothing.
- Key evidence
- 2020 meta-analysis of 31 RCTs, 3,321 participants (Xu et al., Nutrition Journal)
- Studied dose
- 3–5 cups/day of brewed green tea, or 300–500 mg/day of a catechin extract taken with food, 12 weeks
- Best for
- People who already drink tea; those with raised blood pressure or glucose as well
- Cautions
- Concentrated extracts taken fasted above about 800 mg EGCG/day have caused liver injury; take with food and stop if urine darkens or you feel unusually tired. Reduces iron absorption and nadolol levels.
Fenugreek seed's soluble galactomannan fibre and saponins bind bile acids and reduce cholesterol absorption. A 2020 meta-analysis of 15 trials found total cholesterol fell by about 15 mg/dL and LDL by 11 mg/dL, with the clearest benefit in people with type 2 diabetes using 5–25 g/day of whole seed powder; triglycerides fell modestly and HDL rose slightly. Most trials were small, short and from a few Indian and Iranian centres, so the number is less solid than the ones above it.
- Key evidence
- 2020 meta-analysis of 15 small trials, mostly in type 2 diabetes
- Studied dose
- 5–10 g/day of ground seed added to food, or 1 g/day of a hydroalcoholic extract, 8–12 weeks
- Best for
- Raised LDL and triglycerides together with type 2 diabetes, in someone willing to cook with the seed
- Cautions
- Enhances warfarin and other anticoagulants; avoid in pregnancy. Causes a maple-syrup body odour and can cross-react with peanut and chickpea allergy.
How to choose
- If you need a statin-sized reduction (30% or more) and will not take a statin, red yeast rice is the only thing here that delivers it, and you should treat it exactly like a statin: liver enzymes at baseline, report muscle pain, avoid grapefruit and interacting drugs, and buy a brand that publishes its monacolin K content and tests for citrinin.
- If you want the safest first step, psyllium 10 g/day plus 2 g/day of plant sterols or stanols (in fortified spreads or capsules; not in our library but well proven to lower LDL 8–10%) will take 15–20% off LDL for very little risk.
- If LDL and triglycerides and glucose are all raised, berberine addresses all three; bergamot is the second choice in that picture.
- If triglycerides are the main problem (above 200 mg/dL), omega-3 at 2–4 g/day beats everything else here; nothing else lowers triglycerides by more than about 10%.
- If you also have high blood pressure, garlic covers both; if you have indigestion or bloating, artichoke does double duty.
- If you are already on a statin and LDL is still high, psyllium, berberine and plant sterols add to it; red yeast rice does not, because it is the same drug class.
What to skip
Over-the-counter and 'no-flush' niacin
Prescription niacin at 1–2 g/day does raise HDL and lower LDL and triglycerides, but the two big outcome trials (AIM-HIGH, HPS2-THRIVE with 25,673 patients) found no reduction in heart attacks or strokes when added to a statin and more diabetes, infections and bleeding. 'No-flush' niacin (inositol hexanicotinate) releases almost no free niacin and does nothing to lipids at all.
Flaxseed oil capsules
A 2009 meta-analysis of 28 trials found whole or ground flaxseed lowered LDL by about 3 mg/dL, driven by its fibre and lignans, while flaxseed oil had no effect on LDL at all. If you want flax, eat 2–3 tablespoons of ground seed a day; the oil is pleasant but useless for cholesterol.
Policosanol
Early Cuban trials from a single manufacturer reported 20–30% LDL reductions. Independent trials in Germany, the US and elsewhere, including a 143-patient randomised trial at doses up to 80 mg/day, found no effect versus placebo.
Coconut oil
A 2020 meta-analysis of 16 trials found coconut oil raised LDL by about 10 mg/dL compared with non-tropical vegetable oils. The 'medium-chain fat' argument does not apply because coconut oil is mostly lauric and myristic acid, which behave like other saturated fats.
Safety and when to see a clinician
- Red yeast rice is a statin. Do not combine it with a prescribed statin, gemfibrozil, cyclosporine, clarithromycin, itraconazole or more than a small amount of grapefruit; stop and see a clinician if you get unexplained muscle pain, weakness or dark urine. Check liver enzymes before starting and at 12 weeks.
- Bleeding: garlic, omega-3 above 3 g/day and fenugreek add to the effect of warfarin, apixaban, rivaroxaban, aspirin and clopidogrel. Mention them to your prescriber and stop them 1–2 weeks before surgery.
- Berberine raises blood levels of several statins and many other drugs through CYP3A4; if you combine it with a statin, use the lowest statin dose and tell your pharmacist.
- Pregnancy and breastfeeding: red yeast rice, berberine and fenugreek are off the table. Psyllium and dietary omega-3 are fine.
- Supplements change blood numbers, not proven outcomes. If your 10-year cardiovascular risk is above 10%, or you have had a cardiovascular event, a statin or other prescribed therapy is the evidence-based choice and these are at most add-ons.
- See a clinician if LDL is above 190 mg/dL (4.9 mmol/L), triglycerides above 500 mg/dL (which risks pancreatitis), if a close relative had a heart attack before 55 (men) or 65 (women), or if you develop chest pain or breathlessness on exertion.
What matters as much as any herb
- Replacing saturated fat (butter, fatty meat, coconut oil) with unsaturated fat (olive, rapeseed, nuts, oily fish) lowers LDL by 10–15% in controlled feeding studies, more than any single supplement except red yeast rice.
- Soluble fibre from oats, barley, beans and lentils lowers LDL by about 5% per 5–10 g/day, the same mechanism as psyllium and additive with it.
- Losing 5–10% of body weight lowers LDL by around 5–8 mg/dL and triglycerides by 20% or more; triglycerides respond to weight and alcohol far more than to any herb.
- Alcohol and refined carbohydrate drive triglycerides; cutting both is often worth more than omega-3.
- 150 minutes a week of moderate exercise raises HDL modestly and lowers triglycerides by 10–20%; its effect on LDL is small, so it complements rather than replaces the dietary changes.
Frequently asked questions
What is the best natural supplement to lower cholesterol?
Red yeast rice lowers LDL the most, by about 39 mg/dL, but only because it contains lovastatin, so it is a statin with unregulated dosing rather than an alternative to one. For a genuinely non-drug option, berberine (about 25 mg/dL) and psyllium (about 13 mg/dL) have the strongest evidence and can be combined.
Is red yeast rice safer than a statin?
No. It is the same molecule as lovastatin at an unknown dose. It carries the same muscle, liver and interaction risks, and some products contain citrinin, a kidney toxin. People who take it because they had side effects from a statin often tolerate it because the dose is lower, which you could also get with a lower prescribed dose that is tested and consistent.
How much does berberine lower cholesterol?
In the pooled trials, LDL falls by about 25 mg/dL (0.65 mmol/L), total cholesterol by 24 mg/dL and triglycerides by 44 mg/dL at 0.9–1.5 g/day over 8–12 weeks. That is roughly a 15–20% LDL reduction, similar to a low-dose statin, through a different mechanism.
Can I lower cholesterol without medication?
Often, if it is moderately raised and your overall risk is low. Diet changes (swapping saturated for unsaturated fat, adding soluble fibre and plant sterols) can lower LDL by 20–30%, and psyllium plus berberine can add a further 15–20%. If you have had a heart attack, have diabetes or have LDL above 190 mg/dL, medication is the evidence-based option.
Does fish oil lower cholesterol?
It lowers triglycerides by 20–30% at 2–4 g/day, but it does not lower LDL and formulas containing DHA can raise it slightly. Take it for high triglycerides, not for high LDL.
How long do cholesterol supplements take to work?
Most show their full effect within 8 to 12 weeks; berberine and red yeast rice are measurable at 4 weeks. Re-test a lipid panel at 12 weeks, and if LDL has not dropped by at least 10% at a studied dose, stop that product and move on rather than stacking.
Which cholesterol supplements are safe with statins?
Psyllium, plant sterols, omega-3 and artichoke are safe add-ons. Berberine can be used but raises statin blood levels, so keep the statin dose low and tell your pharmacist. Red yeast rice should never be combined with a statin, and high-dose niacin adds risk without proven benefit.
References
- Gerards MC, Terlou RJ, Yu H, et al.. Traditional Chinese lipid-lowering agent red yeast rice results in significant LDL reduction but safety is uncertain: a systematic review and meta-analysis. Atherosclerosis (2015)
- Lu Z, Kou W, Du B, et al.. Effect of Xuezhikang, an extract from red yeast Chinese rice, on coronary events in a Chinese population with previous myocardial infarction. American Journal of Cardiology (2008)
- Gordon RY, Cooperman T, Obermeyer W, Becker DJ. Marked variability of monacolin levels in commercial red yeast rice products: buyer beware!. Archives of Internal Medicine (2010)
- National Center for Complementary and Integrative Health. Red Yeast Rice: What You Need To Know (2023)View source
- Dong H, Zhao Y, Zhao L, Lu F. The effects of berberine on blood lipids: a systemic review and meta-analysis of randomized controlled trials. Planta Medica (2013)
- Jovanovski E, Yashpal S, Komishon A, et al.. Effect of psyllium (Plantago ovata) fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B: a systematic review and meta-analysis of randomized controlled trials. American Journal of Clinical Nutrition (2018)
- Sahebkar A, Pirro M, Banach M, et al.. Lipid-lowering activity of artichoke extracts: a systematic review and meta-analysis. Critical Reviews in Food Science and Nutrition (2018)
- Ried K, Toben C, Fakler P. Effect of garlic on serum lipids: an updated meta-analysis. Nutrition Reviews (2013)
- Bhatt DL, Steg PG, Miller M, et al.. Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia (REDUCE-IT). New England Journal of Medicine (2019)
- HPS2-THRIVE Collaborative Group. Effects of extended-release niacin with laropiprant in high-risk patients. New England Journal of Medicine (2014)
- Pan A, Yu D, Demark-Wahnefried W, et al.. Meta-analysis of the effects of flaxseed interventions on blood lipids. American Journal of Clinical Nutrition (2009)
- Lamiquiz-Moneo I, Giné-González J, Alisente S, et al.. Effect of bergamot on lipid profile in humans: a systematic review. Critical Reviews in Food Science and Nutrition (2020)
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Ask about cholesterolThis guide is educational and is not medical advice. Herbs and supplements can interact with prescription medicines and are not regulated like drugs. Talk with a clinician or pharmacist before starting anything new, especially if you are pregnant, breastfeeding, have a chronic condition, or take medication.