Best Supplements for Heart Health in 2026

Cardiovascular disease remains the leading cause of death globally, killing more people than the next four causes combined. Modern cardiology has powerful tools — statins, blood pressure medications, stents, bypass surgery — but lifestyle and targeted supplementation play a meaningful role in primary prevention and risk reduction. This guide covers the supplements with the strongest evidence for cardiovascular health, organized by what they do.

Important: supplements do not replace statins, blood pressure medications, or other prescription drugs when those are indicated. They can complement them, fill nutritional gaps, and provide additional risk reduction — but they are not a substitute for evidence-based medical care. Work with your physician. For broader context, see our men's longevity protocol and seniors' protocol — cardiovascular disease is the central focus of both.

Omega-3 EPA/DHA: the foundational cardiovascular supplement

Omega-3 fatty acids (EPA and DHA, found in fatty fish and fish oil) have the strongest evidence base of any supplement for cardiovascular health. The mechanism: EPA and DHA reduce triglycerides, lower blood pressure modestly, reduce inflammation, stabilize atherosclerotic plaques, and reduce arrhythmia risk.

Multiple large trials (REDUCE-IT with icosapent ethyl, JELIS with EPA, the Vital trial) show cardiovascular event reduction with omega-3 supplementation, particularly in people with elevated triglycerides and established cardiovascular disease. The effective dose is 1–4 g/day combined EPA+DHA, with the stronger evidence at the higher end (2–4 g) for people with elevated triglycerides.

Nordic Naturals Ultimate Omega is our preferred form — high potency, third-party tested, excellent purity:

For the full comparison, see our best omega-3 supplements guide. The Omega-3 Index (a blood test measuring EPA+DHA as a percentage of total fatty acids in red blood cells) is the best way to dose — target 8–12%.

CoQ10: essential for statin users

Coenzyme Q10 is a critical component of the mitochondrial electron transport chain (energy production) and a potent antioxidant. CoQ10 levels decline with age (by ~50% by age 60) and are dramatically depleted by statin medications — which inhibit the same HMG-CoA reductase pathway that produces both cholesterol and CoQ10.

Statins cause muscle pain (myalgia) in roughly 10–25% of users, and this is the most common reason people stop taking statins. Multiple trials show that CoQ10 supplementation (100–300 mg/day) reduces statin-related muscle pain in many (though not all) users. CoQ10 also has evidence for improving heart failure outcomes and reducing oxidative stress.

The ubiquinol form is the active, reduced form and is better absorbed — particularly for people over 40 and statin users. Qunol Ubiquinol is our top pick:

Magnesium: blood pressure and arrhythmia

Magnesium is involved in over 300 enzymatic reactions, including those regulating blood pressure, heart rhythm, and vascular tone. Magnesium deficiency is common (over 50% of US adults fall short of the RDA) and contributes to hypertension, arrhythmias, and cardiovascular events.

Supplemental magnesium (200–400 mg/day) modestly reduces blood pressure (2–5 mmHg systolic), reduces atrial fibrillation risk, and improves insulin sensitivity. The glycinate form is well-absorbed, gentle on the GI tract, and supports sleep (a bonus for cardiovascular health, since poor sleep raises BP). Pure Encapsulations Magnesium Glycinate is our pick:

For the full comparison, see our best magnesium supplements guide.

Berberine: metabolic and lipid support

Berberine is a plant alkaloid (found in goldenseal, barberry, Oregon grape) that activates AMPK — the cellular "low energy" sensor. AMPK activation improves insulin sensitivity, reduces hepatic glucose production, and modestly improves lipids. The mechanism is similar to metformin (see our metformin guide).

Multiple trials show berberine (500 mg, 2–3x/day) reduces HbA1c by 0.5–1.0% in type 2 diabetics (comparable to metformin) and improves lipids (LDL reduction of 15–25 mg/dL, triglyceride reduction of 20–40 mg/dL). Berberine is one of the few supplements with outcome data comparable to prescription drugs for metabolic health.

Caution: berberine interacts with CYP3A4 enzymes and can affect the metabolism of many medications (statins, cyclosporine, some blood pressure meds). Talk to your pharmacist if you take prescription drugs. Double Wood Berberine is our pick:

Olive leaf: blood pressure and antioxidants

Olive leaf extract (containing oleuropein) is the active compound from the Mediterranean diet's protective cardiovascular effects. Multiple RCTs show olive leaf extract (500–1,000 mg/day) modestly reduces blood pressure (5–10 mmHg systolic) in people with hypertension, with effects comparable to low-dose ACE inhibitors in some studies.

Olive leaf also has antioxidant and anti-inflammatory effects, and may improve insulin sensitivity. Island Nutrition Olive Leaf Extract is our pick:

Garlic: modest but well-studied

Garlic (specifically aged garlic extract) has multiple RCTs showing modest blood pressure reduction (5–8 mmHg systolic in hypertensives) and slight improvements in lipids. The effects are smaller than prescription medications but the safety profile is excellent. Kyolic aged garlic extract is the most-studied form. We don't include a separate product card here — garlic is a useful adjunct but not a top-tier intervention.

Our top heart health supplement picks

For most adults focused on cardiovascular health, our top picks (in priority order):

1. Omega-3 EPA/DHA — 1–4 g/day combined EPA+DHA. Dose to Omega-3 Index 8–12%.
2. CoQ10 (ubiquinol) — 100–300 mg/day, especially if on statins or over 60.
3. Magnesium glycinate — 200–400 mg/day, for BP, arrhythmia, and sleep.
4. Berberine — 500 mg, 2–3x/day (for metabolic concerns; check interactions).
5. Olive leaf extract — 500–1,000 mg/day, for blood pressure support.

The foundations, however, are non-negotiable: Mediterranean diet, regular exercise, blood pressure <120/80, ApoB <80 mg/dL, no smoking, limited alcohol, healthy body composition, and 7+ hours of sleep. No supplement can compensate for a broken foundation. See our diet guide, exercise guide, and sleep guide.

The bottom line

For heart health, the supplement stack with the strongest evidence is omega-3 EPA/DHA (the clear #1, with multiple outcome trials), CoQ10 (especially for statin users), magnesium (for blood pressure and arrhythmia), berberine (for metabolic and lipid support, with cautions about drug interactions), and olive leaf extract (for blood pressure). Layer these on top of foundations: Mediterranean diet, exercise, blood pressure control, no smoking, limited alcohol, and adequate sleep. Test ApoB (better than LDL), blood pressure (at home), HbA1c, and hs-CRP annually. For more, see our longevity supplement stack guide and Peter Attia's Outlive summary.