to help the liver before bedtime drink some olive oil and chase it with a natural acidic drink like orange juice or grapefruit juice.
Your liver gets congested from animal fats and from the gall bladder getting clogged up. It will empty itself in response to the olive oil. Then toxins from the liver can once again freely enter the gall bladder.
go vegetarian or at least eliminate all animal fats from your diet. (milk cheese, and fats on meat/pork/chicken)