Skip to main content

FDA Declares Kratom an Opioid. We’re Here to Explain What It Does.

The Scientist speaks with a clinical toxicologist to discuss how the supplement acts in the brain and what the agency's declaration means for research.

Written byJim Daley
| 3 min read

Register for free to listen to this article
Listen with Speechify
0:00
3:00

ISTOCK, AR30MM

The Food and Drug Administration (FDA) announced on Tuesday (February 6) that kratom, a popular herbal supplement, is a dangerous drug with “opioid properties.” The announcement came after the FDA evaluated the potential for kratom abuse using the Public Health Assessment via Structural Evaluation (PHASE) methodology, which simulates the molecular structures of a substance using 3-D computer modeling.

“[W]e feel confident in calling compounds found in kratom, opioids,” FDA Commissioner Scott Gottlieb declared in the statement. “And it’s an opioid that’s associated with novel risks because of the variability in how it’s being formulated, sold and used recreationally and by those who are seeking to self-medicate for pain or who use kratom to treat opioid withdrawal symptoms.”

Clinical toxicologist Oliver Grundmann of the University of ...

Interested in reading more?

Become a Member of

The Scientist Logo
Receive full access to more than 35 years of archives, as well as TS Digest, digital editions of The Scientist, feature stories, and much more!
Already a member?
Add The Scientist as a preferred source on Google

Add The Scientist as a preferred Google source to see more of our trusted coverage.

Meet the Author

Related Topics

Related articles background image
August 2026 Digest cover
August 2026

Epic Fail: Sea-Monkeys Sabotage Fieldwork

When Barry Hicks set out to photograph thrombolites, thousands of unexpected visitors photobombed his underwater images.

View this Issue
Overcoming Immunotherapy Resistance in Liver Cancer

Overcoming Immunotherapy Resistance in Liver Cancer

Axion Biosystems
Optimizing NGS Library Preparation for Reliable Sequencing Data

Optimizing NGS Library Preparation for Reliable Sequencing Data

Covaris
Using TCR Repertoire Sequencing to Advance Immunology Research

Using TCR Repertoire Sequencing to Advance Immunology Research

Miltenyi
Mapping Clonal Mosaicism in Aging Tissues

Mapping Clonal Mosaicism in Aging Tissues

Mission bio

Products

Sino Biological Logo

Sino Biological Launches SuperNuclease ® Pro with Free Trial Program

Sino Biological Logo

Sino Biological Launches Precisely Characterized Full-Length p-Tau217 Protein to Advance Next-Generation Alzheimer’s Biomarker Assay Development

A photo of a scientist placing the Resipher device on a 96-well plate.

Resipher: Continuous Live-Cell Mitochondrial Respiration Monitoring in 96-Well Plates

Lucid Scientific logo
Conceptual image of ice and frost.

The VAULT100 PRO: Inside the most advanced Stirling Ultracold ULT freezer ever built.

Stirling Ultracold logo