Makaria says: This is great question, and we have a very simple answer that we are required to say, by law: we are not doctors and are not allowed, by law, to offer such advice or information, sorry. Please contact your doctor and ask him/her the same question, and he/she should be able to answer it for you. I wish I could help you more, but this is all I am allowed to offer. Personally, I have used these exact two herbs together, with no noticeable side-effects, but I am certainly no doctor, so my advice cannot, in the law’s eyes, be trusted! I guess our 3,000 year history of safe use of this miraculous plant doesn’t count for much with the governments of the world!