As with all Herbs and Drugs, the potential for interaction by a variety of mechanisms (eg, pharmacodynamic, pharmacokinetic drug inhibition or enhancement, etc) is a possibility.

•  According to a recent study on drug and herb interactions. If used beyond 8 weeks, Echinacea could cause hepatotoxicity and therefore should not be used with other known hepatoxic drugs, s.c. as anabolic steroids, amiodarone, methotrexate, and ketoconazole. ⁵⁸

  Copyright 1999 Rxlist - All rights reserved