Gin & Quinine

[[“I love it when the Teeming Millions profess to know more about a product than the guys who make the stuff. You better call up Schweppes and tell 'em why they really put that quinine in there.”
REPLY:
As the Special Master of Knowledge, you should know that corporations are poor sources for the full truth.]] pwalke
Only, of course (putting aside the corporation/business conflation), if they have some financial interest in being less than truthful.
[[ Are there not some corporations who say that tobacco is not addictive? ]]

That would be a prime example of such a situation.