Do not take echinacea without medical advice if you are using a medication to treat any of the following conditions:
any type of infection (including HIV, malaria, or tuberculosis);
anxiety or depression;
asthma or allergies;
cancer;
erectile dysfunction;
heartburn or gastroesophageal reflux disease (GERD);
high blood pressure, high cholesterol, or a heart condition;
migraine headaches;
psoriasis, rheumatoid arthritis, or other autoimmune disorders;
a psychiatric disorder; or
seizures.
This list is not complete. Other drugs may affect echinacea, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
 Echinacea drug interactions (more detail)
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