Looking for an effective, affordable "background" cleanse product...

I'm not really sure if I have parasites, but I've been having digestive issues I believe due to inadequate bile, and it would be really good to as well as remove cholesterol, stones, etc, take something in the background on a regular basis to rid me (primarily my liver, gb, intestines, etc) of parasites.

I've been looking at Clarkia , Paratrex and so forth, but it can be tricky to know what to choose! What do you think? Ideally I want something effective, comprehensive and affordable!

Thanks!

Hoppi! :)

EDIT -- Also, what is "DE"? o.O