Est. 1973 5% Flavones Heart Health Dietary Supplement Lab Verified Nutrition A Brighter Way Since 1973, we've scoured the globe for the highest quality ingredients, connecting you with the most efficacious supplements that help you live brighter and embrace the moments that matter most. Discussion: Originating in Africa, hibiscus, also sometimes referred to as roselle, has a long history of use as a food, beverage and medicine throughout the world dating back over 6,000 years. Hibiscus flowers contain several polyphenols including flavonoids, tannins and anthocyanins. Hibiscus flower extract may provide nutritive support for normal, healthy cardiovascular function.