Echinacea (Echinacea purpurea and other species) is classified as an immune-stimulating, anti-inflammatory, antioxidant, and antimicrobial herb. It is commonly used to boost the immune system, particularly in preventing or reducing the duration of colds, flu, and other respiratory infections. Echinacea is also known for its ability to reduce inflammation, promote wound healing, and support overall immune function. It is often taken in the form of teas, tinctures, or capsules.