It has been postulated that the consumption of coffee and tea is associated with reduced liver disease; however, this relationship has not been assessed in the US on a population-wide basis.
Most commonly, milk thistle was thought to be good for treating disorders of the liver and gallbladder. These days milk thistle tea is sometimes marketed as a cleansing, ultra-healthy drink.
A few that have caused problems are green tea extract, ginseng ... been any high-quality evidence that any of these promotes liver health," Chung says. Some may even cause harm.