It’s pretty safe to say all of these supplements, their celebrity endorsements, over the top ‘customer’ testimonials, are all pretty much worthless.
But the manufacturer’s know that the FTC works very slow. Add that the odds are heavily in the manufacturer’s favor. And in the rare event they get fined or sanctioned, it’s just a little they have to pay.
https://medium.com/@brothke/new-york-news-radio-the-voice-of-bad-science-c6e9aef154f3