Recreational?

I do not think that means what you think it means.

Police finding ‘uncommon’ drugs in Gainesville
Kratom is relatively new to the US. It’s used in Asia as an anti-diarrheal medicine but has been increasingly used recreationally. Side effects include severe and prolonged vomiting, constipation, delusions, respiratory depression, tremors, aggressive or combative behavior, psychotic episodes, hallucinations and paranoia.

I guess I haven’t encountered that because people who think vomiting, constipation, delusions, trouble breathing, and paranoia are fun aren’t the sort of folks I want to hang with.