Is Echinacea Safe with Azathioprine?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Avoid echinacea while taking azathioprine. Using echinacea may undermine the effectiveness of azathioprine in controlling autoimmune conditions or preventing transplant rejection and could worsen your disease.
Why this interaction occurs
Azathioprine is a purine synthesis inhibitor that suppresses T and B lymphocyte proliferation. Echinacea's well-documented immunostimulatory activity—including lymphocyte activation, macrophage stimulation, and cytokine induction—is directly opposed to azathioprine's therapeutic goal. Concurrent use may reduce disease control in conditions such as rheumatoid arthritis, inflammatory bowel disease, or post-transplant management.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 69,213 reports mentioning Azathioprine. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Azathioprine + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Echinacea interactions → · All Azathioprine interactions →
Already checked this one — check your whole list
Educational only — not medical advice.
Always confirm with your doctor or pharmacist.