Hepatotoxicity from herbal and dietary supplements is on the rise in the US. Body-building supplements are implicated as the most common cause of liver injury. The symptoms that the patients presented to the doctor with were most often with jaundice (yellow eyes and skin) and extremely itchy skin.
Supplements are not usually needed … nor are they universally beneficial. The best advice is to eat fruits, vegetables, lean meats and whole grains for best nutrition.