Fennel is a perennial herb native to temperate regions and is widely used in traditional Eastern medicine. It contains essential oil rich in anethole, which stimulates digestion and has anti-inflammatory, pain-relieving, antioxidant, and strong antibacterial effects. A notable feature is its ability to support the treatment of irritable bowel syndrome, reduce premenopausal symptoms, and improve overall health thanks to its diverse and naturally safe biological activity.