Leafy green vegetables, beans, lentils, asparagus, citrus fruits, and fortified grains.
People who may become pregnant are routinely advised to take folic acid to help prevent neural tube defects in developing babies. For other adults, supplementation should depend on individual needs and medical advice rather than an expectation that it will clear arterial plaque.
4. Vitamin B12: Important for Blood and Nerve Health
Vitamin B12 supports normal nerve function, red blood cell formation, and DNA synthesis. Like folate and vitamin B6, it participates in the metabolic pathways that regulate homocysteine.
Vitamin B12 deficiency can lead to anemia, fatigue, neurological problems, and elevated homocysteine levels. The risk of deficiency increases in some older adults, particularly those with reduced absorption, certain digestive conditions, or diets containing few animal products.
Food sources: Fish, meat, eggs, dairy products, and foods fortified with B12.
People following vegan diets may need fortified foods or supplements to obtain adequate B12. Older adults and people with absorption problems may also require assessment and treatment.
Correcting a deficiency is important for health, but B12 supplements have not been shown to unclog arteries or consistently prevent cardiovascular events in people who already have adequate levels.
5. Vitamin C: Supporting Blood Vessel Structure
Vitamin C is an antioxidant that helps protect cells from oxidative damage and supports collagen production. Collagen is an important structural protein that helps maintain the integrity of blood vessels, skin, and other tissues.
Eating plenty of fruits and vegetables is associated with better overall cardiovascular health. However, this does not establish that high-dose vitamin C supplements independently prevent heart attacks or remove plaque from artery walls.
Food sources: Oranges, strawberries, kiwi, bell peppers, broccoli, and other fruits and vegetables.
For most adults, a balanced diet provides sufficient vitamin C. Supplements may be useful when dietary intake is inadequate, but taking more than the body needs is unlikely to provide extra cardiovascular protection.
6. Vitamin D: What It Means for Heart Health
Vitamin D helps the body absorb calcium and supports bone health, muscle function, and immune regulation. Researchers have also investigated possible connections between vitamin D levels, blood pressure, inflammation, and cardiovascular disease.
Although low vitamin D levels have been associated with certain health risks, an association does not prove that taking supplements will prevent those outcomes. Large clinical trials have not established that routine vitamin D supplementation prevents heart attacks or removes existing arterial blockages in adults who are not deficient.
Sources: Fatty fish, egg yolks, fortified milk and plant-based alternatives, and vitamin D supplements.
People with a confirmed deficiency may benefit from supplementation. The appropriate dose depends on individual circumstances, and excessive vitamin D intake can cause dangerously high calcium levels and kidney complications.
Can Vitamins Actually Unclog Arteries?
The short answer is no—not in the way many supplement advertisements suggest.
Atherosclerotic plaque consists of cholesterol, inflammatory cells, connective tissue, and other substances that accumulate within artery walls. Vitamins support normal bodily functions, but they have not been shown to act as a reliable treatment for removing established plaque.
Some medical treatments can reduce plaque-related risk. Statins and other cholesterol-lowering medications can lower LDL cholesterol and help stabilize plaque. In selected patients, intensive treatment may also produce modest regression of existing plaque.
These treatments work best as part of an individualized plan developed with a healthcare professional.
The Habits That Help Protect Your Arteries
Rather than relying on a single vitamin, focus on the habits that have stronger evidence for protecting cardiovascular health.
- Eat a heart-healthy diet. Emphasize vegetables, fruits, whole grains, legumes, nuts, and fish. Replace many sources of saturated fat with unsaturated fats.
- Stay physically active. Regular exercise supports blood pressure, cholesterol management, circulation, and overall cardiovascular fitness.
- Avoid tobacco. Smoking damages blood vessels and substantially increases cardiovascular risk.
- Monitor blood pressure and cholesterol. Regular checks can identify risk factors before symptoms develop.
- Manage diabetes when present. Keeping blood glucose within an individualized target range helps reduce damage to blood vessels.
- Take prescribed medication as directed. Do not replace cholesterol-lowering or blood pressure medication with vitamins without discussing the change with your clinician.
If you experience chest pressure, sudden shortness of breath, cold sweating, or other possible heart attack symptoms, seek emergency medical attention immediately. Do not delay care while trying dietary changes or supplements.
The Bottom Line
Vitamins B3, B6, B9, B12, C, and D all have important roles in maintaining normal health. Getting enough of them through food—and treating confirmed deficiencies when necessary—can support the body’s essential functions.
But vitamins are not a shortcut to clear arteries. High-dose supplements can cause harm, and lowering a laboratory measurement does not necessarily translate into fewer heart attacks.
The strongest approach to protecting your heart combines a balanced diet, regular physical activity, avoiding tobacco, managing blood pressure and cholesterol, and receiving appropriate preventive medical care. When supplements are needed, they should complement that approach—not replace it.