does echinacea interact with any medications
Echinacea can increase the immune system. Taking echinacea along with some medications that decrease the immune system might decrease the effectiveness of medications that decrease the immune system.1  Medications changed by the liver (Cytochrome P450 1A2 (CYP1A2) substrates) interacts with Echinacea.he body breaks down caffeine to get rid of it. Echinacea might decrease how quickly the body breaks down caffeine. Taking echinacea along with caffeine might cause too much caffeine in the bloodstream and increase the risk of side effects. Common side effects include jitteriness, headache, and fast heartbeat.