Experts say abuse potential low
Dr. Mark S. Gold
Meanwhile, the potential for abuse with intranasal esketamine is low, considering the REMS requirements, said Mark S. Gold, MD, an addiction medicine specialist. If practices follow the guidelines, which restrict patients from taking the medication home, misuse is not likely.
However, the drug’s counterpart, ketamine, which has been abused globally for decades, may see an uptick in illicit use after the recent FDA approval of esketamine, Dr. Gold said. Ketamine is currently produced in clandestine labs for use on the club scene and for date rape purposes, Dr. Gold said. Most recently, ketamine has been mixed with cocaine and referred to as “Calvin Klein” for street use.
“You do have the unintended consequence when a medication is approved, [that] the general public may not be sophisticated enough to understand dose, duration, and supervised administration, and think that street ketamine is equally a medication,” Dr. Gold said. “You have the capacity for black market ketamine to undercut the price and be distributed in a form that can be extremely dangerous and life threatening. Just calling it ketamine provides confusion and the opportunity for black market sales distribution and increases in use.”
Dr. Mathew hopes the REMS designation will not only aid in risk mitigation for esketamine, but also result in valuable postapproval information with respect to longer term safety and efficacy. Questions that still need to be addressed include the best antidepressant regimens in conjunction with intranasal esketamine, the ideal long-term monitoring method, and the potential impact of benzodiazepines on response to Spravato.
“These answers will come with more research – phase 4 postmarketing studies – and also clinical experience in the community, as clinicians begin to prescribe esketamine,” Dr. Mathew said. “Input from organizations, such as the American Society of Ketamine Physicians, will be important as well.”
Dr. Levine, Dr. Posada, and Dr. Gold reported no disclosures. Dr. Sanacora served as principal investigator for several clinical trials associated with intranasal esketamine. Dr. Mathew served as a consultant to several pharmaceutical companies, including Janssen.