(Leaf, stalk, root)
Echinacea is commonly used to treat or prevent colds, flu, and infections, and for wound healing. Many studies have looked at how well echinacea works to prevent or shorten the course of a cold, but none were conclusive. Some studies do show some benefit of using echinacea for upper respiratory infections.
Short-term use is advised because other studies have also shown that long-term use can affect the body’s immune system. Always check with your healthcare provider about any interactions with medicines that you are already taking. People allergic to plants in the daisy family may be more likely to have an allergic reaction to echinacea. The daisy family includes ragweed, chrysanthemums, marigolds, and daisies.