Supplement | Amount | Why |
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Coenzyme Q10 | 100 mg twice per day
| [3 stars] Taking coenzyme Q10 may have a significant impact on blood pressure.
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Fish Oil | 3 to 15 grams daily omega-3 fatty acids | [3 stars] EPA and DHA, the omega-3 fatty acids found in fish oil, have been repeatedly shown to lower blood pressure. |
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Garlic | 600 to 900 mg of a daily herbal extract
| [3 stars] Taking garlic may improve heart and blood vessel health and may help lower blood pressure. |
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Grape Seed Extract | 300 mg per day | [3 stars] According to one study, grape seed extract may lower blood pressure in people with mildly elevated blood pressure. |
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Green Coffee Extract | Extracts providing at least 50 mg per day chlorogenic acids
| [3 stars] Extracts of green, unroasted coffee that are high in chlorogenic acids might help lower blood pressure.
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Pycnogenol | 100 to 200 mg per day
| [3 stars] Pycnogenol has been shown to reduce systolic blood pressure in people with mild hypertension.
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Soy | 10 grams soy protein or 16 ounces soy milk twice per day | [3 stars] Supplementing with soy protein may significantly lower blood pressure. |
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Asteraceae | 15 to 20 drops of an herbal tincture twice per day | [2 stars] In one trial, people with mild hypertension who took a tincture of Achillea wilhelmsii experienced significant reductions in both systolic and diastolic blood pressure. |
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Calcium | 800 to 1,500 mg daily | [2 stars] Calcium supplementation has been shown to lower blood pressure in people with hypertension. |
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Flavonoids | 300 mg per day of hesperidin, for 4 weeks | [2 stars] A study has found that hesperidin, a flavonoid found primarily in oranges and other citrus fruits, decreased diastolic blood pressure in healthy, overweight males. |
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Flaxseed (Atherosclerosis) | Refer to label instructions
| [2 stars] In a double-blind trial, eating foods with milled flaxseed lowered both the systolic and diastolic blood pressure in patients with atherosclerosis of the lower extremities. |
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Hawthorn | 1,200 mg per day of an herbal extract standardized to 2.2% flavonoids | [2 stars] Hawthorn leaf and flower extracts have been reported to have a mild blood pressure–lowering effect.
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Hibiscus | 2 tsp (5 to 6 grams) dried flowers brewed as tea, taken two to three times per day | [2 stars] Two clinical trials have shown that hibiscus can lower blood pressure. The trials have suggested that Hibiscus sabdariffa tea may be as potent as some blood pressure medications. |
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Magnesium | 350 to 500 mg daily
| [2 stars] Taking magnesium may lower blood pressure, especially in people who are taking potassium-depleting diuretics.
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Melatonin | Take under medical supervision: 2 mg daily of sustained-released supplment at night | [2 stars] For people with nighttime hypertension, supplementing with melatonin may reduce nighttime systolic blood pressure. |
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Olive Leaf | Refer to label instructions
| [2 stars] Olive leaf has been used traditionally to treat people with hypertension. In animal studies a constituent of olive leaf has decreased blood pressure and dilated arteries surrounding the heart when given by injection.
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Pea Protein | Refer to label instructions
| [2 stars] Pea protein may help reduce blood pressure. |
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Vitamin C | Refer to label instructions
| [2 stars] Some doctors recommend that people with hypertension supplement with vitamin C, which has been found to have a blood pressure–lowering effect. |
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Vitamin D | 800 to 2,000 IU daily | [2 stars] In one trial, women with low blood levels of vitamin D who were given calcium supplement plus vitamin D experienced significantly reduced systolic blood pressure.
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Vitamin E | 200 IU daily | [2 stars] In a study of people with high blood pressure, vitamin E was significantly more effective than placebo at reducing both systolic and diastolic blood pressure. |
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Arginine | Refer to label instructions
| [1 star] The amino acid arginine is needed by the body to make nitric oxide, a substance that allows blood vessels to dilate, thus reducing blood pressure. Arginine given orally and intravenously has been reported to help reduce blood pressure. |
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Coleus | Refer to label instructions
| [1 star] Forskolin, the active ingredient in Coleus forskohlii, has lowered blood pressure in a trial with people suffering from cardiomyopathy. |
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Egg Protein | Refer to label instructions
| [1 star] People with high blood pressure might be able to lower their blood pressure by using egg protein. |
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Hemp Protein | Refer to label instructions
| [1 star] Hemp protein may contribute to the reduction and prevention of high blood pressure. |
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Indian Snakeroot | Refer to label instructions
| [1 star] Indian snakeroot contains powerful alkaloids that affect blood pressure. It has been used traditionally to treat hypertension, especially when associated with stress and anxiety. |
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L-Tryptophan | Refer to label instructions
| [1 star] The brain chemical serotonin may affect blood pressure regulation, and animal research suggests its precursur L-tryptophan may help prevent and manage hypertension.
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Mistletoe | Refer to label instructions
| [1 star] European mistletoe has reduced headaches and dizziness associated with high blood pressure, according to preliminary research, and has a small blood pressure-lowering effect. |
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Onion | Refer to label instructions
| [1 star] Onion may have a mild blood pressure-lowering effect, according to preliminary research. |
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Reishi | Refer to label instructions
| [1 star] One trial reported that reishi mushrooms significantly lowered blood pressure. |
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Sea Buckthorn | Refer to label instructions
| [1 star] Research suggest that flavonoids from sea buckthorn may have blood pressure–lowering effects.
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Taurine | Refer to label instructions
| [1 star] Research has found that supplementing with taurine lowers blood pressure in people, possibly by reducing levels of the hormone epinephrine (adrenaline). |
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