There are A LOT of natural, cheap stuff besides the above THAT KILL OFF yeast (Candida albicans), fungus and parasites quite readily.
Whoops..! I almost forgot the most important one:
Bentonite Clay. Here is my cheap bulk source (with whom I have no biz relationship, other than being a customer):
http://www.herbco.com/p-1002-claybentonite.aspx
Mix a couple heaping tablespoons of it in a big 2-liter thing of clean water, shake it up, and then it sit for an hour or so to dissolve —looks like muddy water (grey tang?), doesn’t taste too crazy at all. Maybe 4 pounds will do you for one year, and that’s cheap as heck.
Drink 1/3 liter in the morning and at night -—your gunned up intestines will freaking LOVE YOU for this.
The clay has a strong negative charge and binds particles that have a strong positive charge —that most gunk.
Now if you take a bunch of minerals right after drinking bentonite clay you’d probably just bind up those minerals and be robbed of whatever benefit they’d otherwise have imparted, so if you take minerals, take them at some other time of the day.
If you are over 40 I will guarantee you have MUCH MORE gunk in you than you wager, and that’s even if you eat pretty well.
To really clean up the process is GRADUAL —this is not instant magic.