Emily Caldwell
Oct 5, 2023
Ohio State University - One treatment each of two psychedelic drugs lowered depression and anxiety and improved cognitive functioning in a sample of U.S. special operations forces veterans who sought care at a clinic in Mexico, according to a new analysis of the participants’ charts.
Eighty-six veterans completed pre-treatment questionnaires assessing a range of mental health symptoms as well as satisfaction with life, anger levels and suicidality. Each attendee received a single oral ibogaine hydrochloride dose and, on a separate day, at least three incremental inhalation doses adding up to 50 milligrams of 5-MeO-DMT, also commonly called Five or Bufo. Preparation and reflection sessions preceded and followed each treatment.
Overall, participants reported large improvements in self-reported PTSD symptoms, depression, anxiety, insomnia severity and anger, as well as a significant increase in satisfaction with life, from pre-treatment to the one-month follow-up, and sustained benefits at the three- and six-month follow-ups. Additional reported improvements that continued for six months included reductions in disability and post-concussive symptoms, and very large increases in psychological flexibility and cognitive functioning.
Alan Davis said the improved cognitive functioning warrants more research into whether better thinking results from lowered mental health symptoms or biological changes to signaling in the brain, or a mixture of both types of effects. And they noted that changes to psychological flexibility – one’s capacity to act in ways that are consistent with their values regardless of whatever internal or external experience they might have – have been found in previous research to be connected to insightful and mystical psychedelic experiences.