Here is the uses and side effects of using Echinacea (from WebMD):
Echinacea is an herb. Several species of the echinacea plant are used to make medicine from its leaves, flower, and root.
Echinacea is widely used to fight infections, especially the common cold and other upper respiratory infections. Some people take echinacea at the first sign of a cold, hoping they will be able to keep the cold from developing. Other people take echinacea after cold symptoms have started, hoping they can make symptoms less severe. The people who use echinacea to treat symptoms have the right idea. Research to date shows that echinacea can help treat a cold, but it won’t prevent one.
Echinacea is also used against many other infections including the flu, urinary tract infections, vaginal yeast infections, genital herpes, bloodstream infections (septicemia), gum disease, tonsillitis, streptococcus infections, syphilis, typhoid, malaria, and diphtheria.
Other uses not related to infection include chronic fatigue syndrome (CFS), rheumatism, migraines, acid indigestion, pain, dizziness, rattlesnake bites, and attention deficit-hyperactivity disorder (ADHD).
Sometimes people apply echinacea to their skin to treat boils, abscesses, skin wounds, ulcers, burns, eczema, psoriasis, UV radiation skin damage, herpes simplex, bee stings, and hemorrhoids.
Echinacea species are native to North America and were used as traditional herbal remedies by the Great Plains Indian tribes. Later, settlers followed the Indians’ example and began using echinacea for medicinal purposes as well. For a time, echinacea enjoyed official status as a result of being listed in the US National Formulary from 1916-1950. However, use of echinacea fell out of favor in the United States with the discovery of antibiotics and due to the lack of scientific evidence supporting its use. But now, people are becoming interested in echinacea again because some antibiotics don’t work as well as they used to against certain bacteria.
Commercially available echinacea products come in many forms including tablets, juice, and tea.
There are concerns about the quality of some echinacea products on the market. Echinacea products are frequently mislabeled, and some may not even contain echinacea, despite label claims. Don’t be fooled by the term “standardized.” It doesn’t necessarily indicate accurate labeling. Also, some echinacea products have been contaminated with selenium, arsenic, and lead.
How does it work?
Echinacea seems to activate chemicals in the body that decrease inflammation, which might reduce cold and flu symptoms.
Laboratory research suggests that echinacea can stimulate the body’s immune system, but there is no evidence that this occurs in people.
Echinacea also seems to contain some chemicals that can attack yeast and other kinds of fungi directly.
Side Effects:
Echinacea is LIKELY SAFE for most people when used short-term. There is not enough information to know if echinacea is safe for long-term use. Some side effects have been reported such as fever, nausea, vomiting, unpleasant taste, stomach pain, diarrhea, sore throat, dry mouth, headache, numbness of the tongue, dizziness, insomnia, disorientation, and joint and muscle aches.
Echinacea is POSSIBLY SAFE in children aged 2-11 when used for up to 10 days. But some children might develop a rash.
Echinacea can cause allergic reactions, especially in people who are allergic to ragweed, mums, marigolds, or daisies. If you have allergies, be sure to check with your healthcare provider before taking echinacea.
Applying echinacea to the skin can cause redness, itchiness, or a rash.
Special Precautions & Warnings:
Pregnancy or breast-feeding: Not enough is known about the use of echinacea during pregnancy and breast-feeding. Stay on the safe side and avoid use.
“Auto-immune disorders” such as such as multiple sclerosis (MS), lupus (systemic lupus erythematosus, SLE), rheumatoid arthritis (RA), a skin disorder called pemphigus vulgaris, or others: Echinacea might have an effect on the immune system that could make these conditions worse. Don’t take echinacea if you have an auto-immune disorder.
An inherited tendency toward allergies (atopy): People with this condition are more likely to develop an allergic reaction to echinacea. It’s best to avoid exposure to echinacea if you have this condition.