Pharmacology, Phytochemistry, and Medicinal Use of Echinacea (Echinacea Purpurea)

Echinacea purpurea ( E. purpurea ), belonging to the family Asteraceae, and frequently referred to as purple coneflower. E. purpurea is valued for its antioxidant, anti-inflammatory, and immunomodulatory properties. It has been used in herbal medicine to prevent and cure respiratory infections for centuries. From the Echinacea species, numerous prominent classes of biologically active substances, such as alkamides, caffeic acid, polysaccharides, and flavonoids possessing pharmacological properties, have been identified. These bioactive substances in E. purpurea contribute to immunological activity by producing more cytokines, altering inflammatory cascades, and exhibiting antimicrobial properties. The effect of E. purpurea on reducing the severity and length of colds and influenza is supported by scientific studies and affirmations of its effectiveness. It is also used medicinally to reduce oxidative stress, relieve pain, and promote wound healing. This chapter mainly emphasizes the pharmacological effect, phytochemical and bioactive constituents, and medicinal use of E. purpurea , highlighting its importance in herbal and modern medicine.