Japanese knotweed toxic to kidneys?

I am taking Japanese knotweed for lyme disease but read on selfhealth.com that long term usage can be toxic to kidneys. Are you able to comment on this for me please?
I have not heard of that problem and I did check the literature pretty carefully, especially the Chinese who use the herb extensively. I tried your link and everything was in German which I don’t read, so cannot respond to that.
posted on January 7, 2012 in Herbs, japanese knotweed
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