Alt-medicine nutballs love “trace minerals”, because they claim that we’re missing them due to the way our water and food are treated. It’s a “return to nature” argument, which falls short here, because Trace Mineral Drops contain a concentration of arsenic 200 times higher than the highest exposure recommendation given by the World Health Organization.
Since the FDA does not regulate supplements in the same manner that it regulates foods or drugs, products like this often go to market with harmful levels of toxic metals and other byproducts. The FDA does not act to inspect supplements until they are implicated in causing harm, which means that if you chug some moron-juice because a yoga person told you it was good for your energy, you might end up arsenic-addled before the FDA even knows it’s being sold.