soda is c.r.a.p sugar water. i never drink that mess.
do some research on Milk Thistle. that is supposed to help the liver with it's antioxydant properties.
and drink alot of clean water. the body needs help flushing out toxins and you do that with lots of water.
consider drinking some herbal teas that may also help clean out your system. stay away from processed foods and eat raw freah vegs and fruits.
the body can heal itself - especially if it gets a bit of help from the owner. good luck!