I assume you're asking about using it for cattle since practically no one will buy hogs that have been fed with it anymore.

The name of the product labeled for cattle was/is "Optaflexx".    In hogs it was called "Paylean"

It did what it was advertised to do in hogs, but China didn't want to buy hogs fed with it (more specifically it was used as a reason for China to restrict trade because they don't want to buy from the US period).       So basically every packing company in the US quit buying hogs that have been fed with Paylean and China still isn't buying any more US pork.


In hogs it had a reputation for making the hogs act "nutty"/"wild" and hard to load.   Honestly I can't say that it really made that much of a difference.  We haven't used it in several years and our hogs act just as nutty as they ever did back when they were on Paylean.