Based on known margins of safety between normal and toxic dietary exposures, selenium is more poisonous than either arsenic or mercury. However, selenium, in minor amounts, is an essential trace nutrient for animals and humans.
Remove Kidney Stones With This Amazing Herb. Good info for hubby who is prone to kidney stones. A link to where to buy but also other info on things to eat/drink to help keep stones to a minimum and maybe less flare-ups.