(Hibiscus sabdariffa) The Hibiscus Flower is often brewed into a medicinal tea. It is naturally high in vitamin C, has been known to be a natural antioxidant, a diuretic and laxative. Regular consumption has been known to lower blood pressure. Also can be used as a diet aid. Properties Include: Citric-acid, malic-acid, ascorbic-acid, hibiscic-acid, mucilage, pectin, anthocyanins, calcium, carbohydrates, chromium.