There are some very innovative and credible people using zeolite. Gabriel Cousens for one. I believe Andreas uses it too. I'll ask him some time when we talk.
The best way to get minerals is by juicing high minerla content greens found in things like ocean wqater grwon wheatgrass, dandelion grees, kale, broccoli, etc. It is essential that the produce is grown in soil rich in minerals and humic acid so the plants can convert them. Utilizing plant form minerals ensures that the minerals are highly useable due to their angstrom size.