Hawthorn is best known as a cardiotonic. Used frequently in cases of congestive heart failure and high blood pressure;it is the hyperosides and the vitexins (especially the vitexin-2 rhamnoside) that are present in hawthorn enabling it to effect these conditions.Essentially, hawthorn has been shown to increase the inotropic effect (contractile force), and increase the tolerance of the heart to lower oxygen (hypoxic) conditions.
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