How can you know, if the trials don't document what's in the placebo, and the FDA doesn't regulate it? But these are accusations made by a man who admits he ha

How can you know, if the trials don't document what's in the placebo, and the FDA doesn't regulate it? But these are accusations made by a man who admits he had never heard of active placebos until a few days ago. He's reading reports that are summaries of the trials and apparently concluding that since the summary doesn't include the ingredients of the placebo then they're undocumented and not regulated by the FDA. How does he know that?