Hawthorn leaves, flowers, and berries have been used for generations by herbalists as a cardiovascular tonic. Hawthorn promotes cardiovascular health by supporting cardiac muscle tone and vascular integrity. Hawthorn Extract also exhibits powerful free radical scavenging activity. NOW Hawthorn Extract is standardized to 1.8% vitexin-2” -O-rhamnoside that, along with other natural components, has been found to support normal blood flow and may help to maintain blood pressure already within a healthy range.