Kratom extract study aims to uncover effects on regular users

NCT ID NCT06640569

First seen Nov 17, 2025 · Last updated Apr 29, 2026 · Updated 25 times

Summary

This study looks at how commercial kratom extract products affect mood, thinking, and physical signs like heart rate and pupil size in adults who use them regularly. Researchers will also interview participants about their experiences. The goal is to better understand these products, not to test a treatment.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Johns Hopkins University

    RECRUITING

    Baltimore, Maryland, 21224, United States

  • Johns Hopkins University Behavioral Pharmacology Research Unit

    NOT_YET_RECRUITING

    Baltimore, Maryland, 21224, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

Conditions

Explore the condition pages connected to this study.