1 Article by Peter Gasser
The Afterglow Inventory (AGI): Validation of a new instrument for measuring subacute effects of classic serotonergic psychedelics.
Journal of psychopharmacology (Oxford, England) – March 31, 2025
Summary
Classic psychedelics often leave users with a pleasant "afterglow"—a period of enhanced well-being after the main effects fade. To explore this, researchers developed a new questionnaire to assess subacute effects. Their study found that the Afterglow Inventory effectively measures positive outcomes, revealing connections between acute experiences and lasting benefits.
Abstract
Classic psychedelics such as psilocybin and lysergic acid diethylamide are anecdotally associated with the phenomenon of "psychedelic afterglow," a...