Premium Herbal Formulas A Relaxing Blend of Hawthorn, Hibiscus, and Passionflower Supports Cardiovascular Health Vegetarian - Gluten-Free Dietary Supplement Kosher Check CardioEssence is a delicious tasting, liquid tonic that helps maintain and support cardiovascular health in adults. CardioEssence blends the heart-healthy benefits of hawthorn berries, leaves, & flowers, passionflower, and hibiscus flower. Prepared utilizing a traditional infusion method for maximum potency, each serving of CardioEssence provides a minimum of 10 mg of proanthocyanidins, the active ingredient found in hawthorn berries. Support long-term cardiovascular health in adults with CardioEssence. We promise we won't break your heart, as we believe in creating long-term, lasting relationships.