the supplement industry is ridiculously sketchy and virtually unregulated wild-west
and probiotics are the absolute worst of the industry with endless lies in claims and products that often test with nothing of the claim in them
if you want to try probiotics
1. start with a single strain probiotic, multi-strain are often lies
2. try an extremely well known/proven probiotic
want to know something is happening? try lp299v Lactobacillus Plantarum
it's cheap, it's been studied for 30+ years so lots of trials and proven claims
it won't colonize, no oral probiotic will colonize, so you have to keep taking it or it's gone in a few days from your GI