After her suicide attempt, Louise’s psychiatrist suggested she try ketamine. She agreed, and received an infusion intravenously. Within hours, her sense of well-being improved. The hospital discharged her. Back home, she discovered that going to the market was no longer a “herculean task.” Getting her car washed wasn’t an insurmountable chore. “Life was better,” she said. “Life was doable.”

As a journalist who covers health and medicine, I had read about the success of experimental trials that used ketamine to treat depression. My therapists had recommended extreme treatments like electroshock therapy, a procedure that frightened me due to reports of memory loss from those who had undergone it, but had never mentioned this. But I was getting desperate for a serious intervention.

For six years now, life has been really good for James. He has a great job as the creative director of an advertising firm in New York City. He enjoys spending time with his wife and kids.

And it has all been possible, he says, because for the past six years he has been taking a drug called ketamine.

Increased dissociative symptoms associated with ketamine infusion treatment can predict a greater antidepressant effect in individuals with major depressive disorder or bipolar disorder. In fact, specific properties of ketamine-induced dissociation (such as depersonalization and derealization) can uniquely predict the antidepressant response, according to a study published in the Journal of Affective Disorders.

Like a May shower, the studies on psychedelic drugs' potential therapeutic benefits came — first as a sprinkle, then a steady downpour. Between 2012 and 2017, the papers abounded. One, published in 2016, suggested that magic mushrooms might alleviate anxiety in cancer patients; another in 2017 indicated that ecstasy could help veterans cope with PTSD symptoms; and one in 2012 hinted that ketamine might curb major depression.