Hello
Yes a liver cleanse is a great idea we are all unfortunately very toxic, this is a sad reality. There are safe ways to cleanse your liver and all your eliminative organs while not depleting your body of the minerals and nutrients it needs.
I would recommend a full nutritional balancing program with a hair mineral analysis. it is very affordable and takes all the guesswork out of the process of getting back into health.
You receive a full diet and nutrient program based on your needs as well as simple detox techniques and lifestyle changes. This is by far the most complete program I have seen anywhere and when followed properly, the results are excellent.
you can find more information about this program here: http://www.healingaia.com/nutrition/index.php