Probiotic supplements are largely unregulated, leading to many products with poor quality control and inaccurate labeling.

“buyer beware because it's a supplement market. It's largely unregulated and that means that there are a lot of bad products out there and a lot of products that um even though they're not intended to be bad, just don't have great quality control.”

“I think the other to be aware of is, and I think you're insinuating this with talking specifically about VSL 3 that the supplement market is a mess. It's not regulated. There are a lot of really poor products out there. Many of which don't have the viable organisms that they suggest they have in their label. Many of them don't have the actual species that they say that they do on their label or they have contaminants that are present. So I think it's really important if people want to go the route of probiotic supplements to make sure that you go with a company that you trust. There are independent organizations that can verify the contents of probiotics supplements. So USP is a symbol that you can look for in probiotic supplements as an independent verificatoin of the contents. Not efficacy but of the contents.”

“Well, it's the same case as the glucoraphanin sulforaphane supplements. A lot of the probiotics in the market, there is a lot of dead bacteria in them... A lot of garbage. I mean, this is ubiquitous in all supplement. You know, I think there was even a study showing something like 70% of, like, a lot of these supplements on the market are not actually what they say they are, they don't have the concentrations they say.”