Swanson Hawthorn Berry & Extract Take care of your heart with Swanson Hawthorn. This traditional cardiovascular tonic provides antioxidants that support healthy blood flow to the heart. The capsules combine 250mg of standardized extract (1.8% vitexin and hyperoxide) with 250mg of whole hawthorn berries. Swanson Hawthorn: Maintains healthy blood circulation Helps maintain ideal blood pressure Supports healthy blood lipid levels Contributes to the health of the cardiovascular system Dosage: Take one capsule one to three times daily with water.