How state regulations shape kratom exposure and harm with Grant Comstock and Ryan Feldman

How state regulations shape kratom exposure and harm with Grant Comstock and Ryan Feldman

June 25, 2026 · 22 min · Season 4 · Episode 24

About this episode

The episode discusses the impact of state regulations on kratom exposure and related health outcomes with experts Grant Comstock and Ryan Feldman.

In this episode, Dr Tsen Vei Lim talks to Drs Grant Comstock and Ryan Feldman. Grant is an Assistant Professor at the Medical College of Wisconsin and Associate Medical Director of the Wisconsin Poison Center and Ryan is a clinical toxicologist, emergency medicine pharmacist, and Clinical Associate Professor at the Medical College of Wisconsin. The interview covers Grant and Ryan’s article examining the association between state-level kratom regulations and poison center-reported severe medical outcomes and healthcare use in the United States (US). What is kratom? [01:14] Why people are worried about kratom use in the US [02:58] Grant and Ryan’s research question and focus of the study [05:33] The key findings of the study [10:25] The relationship between kratom regulations and kratom-related hospitalisations [12:16] The implications of the findings for existing kratom regulations [13:04] The data that researchers should collect to improve the data vacuum on kratom [18:03] The takeaway from the study: read the discussion! [19:40] About Tsen Vei Lim: Tsen Vei is an academic fellow supported by the Society for the Study of Addiction, currently based at the Department of Psychiatry…

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