Angstrom minerals are the best I have found next to highly mineralized plants such as wheatgrass. If you're using angstrom mag and cal in your alkalinizing drink you could go with a teaspoon of each.
Of coure there is also sole but that is for balanced trace minerals and coherent "information' (resetting).
I have found that many people do not tolerate Epsom Salts , They can be harsh on some individuals.
For liver flushing, one could substitute epsom for mag chloride.