Esketamine
A patented enantiomer of ketamine formulated for nasal inhalation, licensed for treatment-resistant depression. It offers antidepressant benefits but often requires continued use, and its long-term effects on dependence and tachyphylaxis compared to racemic ketamine are still being explored.
Videos Mentioning Esketamine

182 - Psychedelics & Recreational Drugs
Peter Attia MD
A patented enantiomer of ketamine formulated for nasal inhalation, licensed for treatment-resistant depression. It offers antidepressant benefits but often requires continued use, and its long-term effects on dependence and tachyphylaxis compared to racemic ketamine are still being explored.

The Possibilities of Mind-Altering Compounds | Dr. Suresh Muthukumaraswamy | The Tim Ferriss Show
Tim Ferriss
The S-enantiomer of ketamine, formulated as a nasal spray. marketed by Janssen, it is sold at a significantly higher price than generic ketamine, largely due to patent protection.