I came across several cases of clients’ feedback regarding past intake of certain traditional herb preparations and ill effects on the liver (proven by blood tests and shown as fatty liver). These cases may be due to adulteration of herbs or mixed with some pharmaceuticals to increase the ‘potency’.
The herb industry is very complex. Adulteration or substitution is very common in commercially available supplements and even of raw herbs (heavy metal contamination is quite common). Identification of herbs takes expertise and the effort of the supplying company to check the identification of herbs via independent testing.
I am known to take a long time to implement a new product or herbal preparation because I am very particular on the above factors. After all, I will be taking them too!