If used beyond 8 weeks, Echinacea could cause hepatotoxicity and therefore
should not be used with other known hepatoxic drugs, such as anabolic steroids,
amiodarone, methotrexate, and ketoconazole.
Use of Echinacea is discouraged during pregnancy and for people with
tuberculosis or autoimmune problems
Do not use Echinacea continuously for more than a few weeks.
Do not give Echinacea to children younger than two years old; start with
minimal doses for older children and older adults.
Should not be used by those who are allergic to plants in the sunflower family.
Incidences of hepatotoxicity and nephrotoxicity may be augmented by
acetaminophen when concomitantly used with the potentially hepatotoxic herbs
Echinacea and kava, and with herbs containing salicylate (willow, meadowsweet),
respectively. Learn more about Echinacea.