![]() Hawthorn extracts are available in capsules or tablets standardized to either total flavonoid content (usually 2.2%) or oligomeric procyanidins (usually 18.75%). ![]() The efficacy of hawthorn for the treatment of CHF has been confirmed in a double-blind trial. Symptoms of CHF-including heart palpitations, chest pressure, and swelling in the extremities-decreased throughout the trial during the use of hawthorn. In a large preliminary trial, people with mild to moderate CHF were given 300 mg of hawthorn flower and leaf extract (standardized to contain 2.2% flavonoids) three times a day for two months. Hawthorn extracts appear to increase blood flow to the heart, increase the strength of heart contractions, reduce resistance to blood flow in the extremities, and act as an antioxidant. SupplementĬlinical trials have shown that standardized extracts made from the leaves and flowers of hawthorn are effective in helping people with early-stage CHF. For a supplement, little scientific support. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.ģ Stars Reliable and relatively consistent scientific data showing a substantial health benefit.Ģ Stars Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.ġ Star For an herb, supported by traditional use but minimal or no scientific evidence. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. ![]() While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by some in the medical community, and whether studies have found them to be effective for other people.įor over a decade, our team has combed through thousands of research articles published in reputable journals. Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition.
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