Echinacea, or coneflower, is a flowering plant and popular herbal remedy.

Originally from North America, it has long been used in Native American practices to treat a variety of ailments, including wounds, burns, toothaches, sore throat, and upset stomach.

Most parts of the plant, including the leaves, petals, and roots, can be used medicinally — though many people believe the roots have the strongest effect.

Echinacea is usually taken as a tea or supplement but can also be applied topically.

Today, it’s primarily used to treat or prevent the common cold.

One review in over 4,000 people found a potential 30–90% reduced risk of colds from taking echinacea.