Echinacea purpurea should be taken at first signs of common cold. Although it appears generally safe for most people, it can cause side effects such as nausea, vomiting, abdominalabdominalrelating to the stomach and intestines pain, and heartburn.
Do not use Echinacea purpurea if you are allergic to it. If you experience a severe allergic reaction (swelling of the face and throat, difficulty breathing), stop using echinacea immediately and seek medical attention.
There may be an interaction between Echinacea purpurea and the following medications:
- caffeine
- medications metabolized by liver enzyme cytochrome P450 1A2 (e.g., acetaminophen, olanzapine, propranolol)
- medications metabolized by liver enzyme cytochrome P450 3A4 (e.g., clarithromycin, cyclosporine, diltiazem)
- immunosuppressants
Talk to your doctor before using Echinacea purpurea if you are taking any of these medications.
Your health condition may be affected by the use of Echinacea purpurea. Talk to your health care provider before using Echinacea purpurea if you have any of the following disease or conditions:
If your symptoms persist or worsen, contact your health care provider.
For use beyond 8 weeks, you should consult a health care provider.
Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.