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Sustiva, Combivir, and Herbal Meds

Feb 28, 2000

I have recently started taking a product called, "AM-300." The ingredients are: Chromium Guarana Extract Gotu Kola Siberian Ginseng Fo-Ti Ginkgo Biloba White Willow Bark Nigella Sativa Cayenne Pepper Hawthorne Berry Extract Green Tea Extract Selenium Echinacea Bladderwick Ma-Huang Reishi Mushroom

Do any of these medications interact with Sustiva or Combivir?


Response from Dr. Squires

I do not have any information about the interaction of efavirenz (sustiva) and/or combivir with any of the compounds that you mention. However, a recently published study with another commonly used substance, St John's Wort, demonstrates that more work needs to be done in this area. In the study, patients receiving the protease inhibitor indinavir (Crixivan) experienced lower blood levels while on St John's Wort. This decrease in indinavir blood levels may impact on it's efficacy. Your health care provider should have a complete list of all the agents that you are taking, especially if you develop side effects or your response to therapy is inadequate.


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