Another really gentle thing that you can do for your liver is doing a castor oil pack on your abdomen right over the liver. This is also considered a gentle cleanse.
Take a piece of white flannel material and saturate it with topical castor oil (found at any health food store) and place it over the liver. Cover that with a piece of plastic and then a heating pad and towel and leave it on for about 20 minutes. It's good also for forcing blood to come to the area and heal whatever needs healing and to carry away toxins when the area cools down. The castor oil has wonderful tissue softening properties when the heat "carries" it down into the tissue. It also helps reduce scaring.