What is ketamine, and what is it used to treat? Ketamine is an FDA-approved treatment as an anesthetic drug. But when we talk about ketamine, it is important to note that it is what we call a racemic mixture. So, it has both S- and R-enantiomers, or molecules that are mirror images of each other.
https://medicine.yale.edu/news-article/ketamine-handle-with-care/

