Hibiscus rosa sinensis flower extract
Pharmacologically, leaves, stem and root of H. rosa-sinensis contain a remarkable quantities of flavonoids which are associated with antioxidant, fever-reducing, pain-relieving and spasm-inhibiting activities and the flower has soothing properties which are used to relieve menstrual cramps and relax spasms and general cramping. Saponins in H. rosa-sinensis bind to cholesterol to form insoluble complexes and excreted via the bile and reduces blood pressure and have been found to be potentially useful for the treatment of hypercholesterolemia.