I am a doctor myself and i can say that this herb works well.. especially if you have symptoms of an overloaded liver, like loss of appetite, nausea, fat intolerance. I had these problems after a trip to singapore, malaysia.. 1 week after coming back, along with the above symptoms, the liver area started to hurt too. Tried this product regularly for 2 weeks. I did 2 servings a day for a week, then moved to 1 at night and the symptoms disappeared. Did some research and stumbled on to "the liver cleanse". have done 3 so far with many amazing body and mind changes! I still use Milk Thistle off & on after days of travel and eating out. Of course, the health of your liver has a lot to do with your mind too. While in the physical body it deals with metabolising toxins in food, liver in the subtle body metabolizes unexpressed emotions esp. anger.. you can google and read more and experience these things.. Chose Natrol as the bottle says free of additives like soya, gluten, yeast, etc, etc.