Echinacea is used to reduce symptoms of the common cold and the flu, such as sore throat (pharyngitis), cough, and fever.

It is also recommended to use echinacea to boost the immune system and help the body fight infections.

Echinacea plants contain a complex mixture of active substances. Some of these compounds may have antimicrobial and antiviral properties, while others may support the immune system in other ways.

Like many other plants, all types of Echinacea contain phenols. Phenols regulate the activity of a range of enzymes and may have beneficial antioxidant properties. Although rare, echinacea may cause some allergic reactions.