Ketamine can be produced by Pochonia chlamydosporia: an old molecule and a new anthelmintic? - PMC
Infection by nematodes is a problem for human health, livestock, and agriculture, as it causes deficits in host health, increases production costs, and incurs a reduced food supply. The control of these parasites is usually done using anthelmintics, ...

Not really new but a lot of people don’t know this, and often ketamine is dismissed as just a weird lab drug.