I have seen a single peanut or a bite into a shrimp put a susceptible person into anaphylactic shock, while some of us may have these foods. This also can happen from a conventional drug, supplement, herb or Chinese herb.
I am not versed in Traditional Chinese Medicinals. When properly prescribed according to professional standards I have seen great benefits with elimination of disease.
Since I am not familiar with all of the Chinese supplements I had to get more educated and versed in the subject. I recently purchased a book by Fred Jannes with Bob Flaws titled Herb Toxicities and Drug Interactions
This has helped me in many situations to decipher toxicities in patients taking Chinese preparations