hawthorn(redirected from Crataegus oxyacantha)
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A deciduous shrub or tree that contains flavonoid glycosides, saponins, tannins and trimethylamine, which is best known for its cardiovascular activity: the active principles in hawthorn cause vasodilation, bradycardia and normalise blood pressure in both hypo- and hypertension. It has been used for angina pectoris, spasms of peripheral arteries (e.g., Raynaud phenomenon), tachyarrhythmias and insomnia; the berries are used in Chinese herbal medicine as a digestive tonic.
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