the two zeolites are from different companies. They are competitors. One of the companies is multi level marketing and the other isn't.
I think the formulas are different. The one in the 2nd link is supposed to be in humic acid, I think making it more bioavailable, or so they say.My sis has not tried the one in the 2nd link yet (the one we can get here at our health food store). Her naturopath said that she'd buy it and test it on her BTA machine and then on patients. I think in the testimonial she says it took her about 3 months until she felt noticably better. She had been ill for about 3 straight years.
I just thought I'd mention zeolite as maybe an option to try because it really helped my sister. Beyond that is over my level!