Hawthorn leaf extract is an active ingredient derived from the leaves of the hawthorn plant (Crataegus pinnatifida) of the Rosaceae family, typically prepared through water extraction, alcohol extraction, and modern separation and purification processes.

The core active compounds of Hawthorn leaf extract include flavonoids (such as vitexin and rutin), polyphenols, and triterpenic acids, which exhibit significant biological activity. Unlike hawthorn fruit, hawthorn leaf extract has been traditionally used in Chinese medicine for "promoting blood circulation, removing stasis, and reducing turbid lipids." Modern research employs standardized processes to ensure stable content of flavonoids and other components, making it a key natural ingredient in cardiovascular health.

Hawthorn leaf extract is primarily known for its cardiovascular and cerebrovascular protective effects. Its flavonoid components can dilate coronary arteries, increase blood flow, and improve myocardial hypoxia.

It also helps regulate blood lipids, reduce blood viscosity, and inhibit the formation of atherosclerotic plaques. Studies show that its antioxidant activity can mitigate vascular endothelial oxidative damage, while polyphenols may assist in regulating blood pressure and combating arrhythmias. Additionally, the extract exhibits potential anti-inflammatory, anti-anxiety, and microcirculation-improving properties.

Hawthorn leaf extract is mainly used in cardiovascular and cerebrovascular health products and pharmaceuticals, such as capsules or tablets for assisting in lipid reduction and improving coronary circulation.

It serves as an antioxidant and vascular health additive in functional foods and beverages. In herbal medicine, it is often formulated into treatments for mild angina and palpitations. The cosmetics industry utilizes its antioxidant properties in anti-aging and skin-brightening products. In recent years, its applications have expanded to pet cardiovascular health and medical foods.