I would assert so, oddly enough different metals kill different bacteria, let's see.

I shall now search ncbi and see: Bismuth apparently has action, especially highlighted against E. Coli: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8236042/

One study found few significant changes on normal fecal microflora before and after during a 1-2 day treatment period (I'm assuming this is a 'normal use' case :')))): https://pubmed.ncbi.nlm.nih.gov/2305174/