Science-Based Nutrition Healthy Heart Helps Maintain Healthy Levels of HDL, LDL and Triglycerides Dietary Supplement Non GMO - Gluten Free Provides Powerful Antioxidant Protection Patented and Clinically Tested Doctor's Best Flavonoid Complex with Sytrinol contains a patented proprietary blend of polymethoxylated flavones (PMFs) and tocotrienols, clinically tested to work in combination to provide powerful antioxidant protection. Sytrinol is a formula derived from citrus and palm fruit extracts, which helps support the cardiovascular system by maintaining LDL, HDL and triglyceride levels already within the normal range.