Dr. Chris McCurdy on Huberman Lab: Why Kratom Misleads

How kratom alkaloids differ across leaf, extract, and isolate forms; McCurdy maps opioid and serotonin effects, addiction risk, and harm reduction tools.

Andrew HubermanhostDr. Chris McCurdyguest

Jul 21, 20252h 42mWatch on YouTube ↗

EPISODE INFO

Released: July 21, 2025
Duration: 2h 42m
Channel: Huberman Lab
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

My guest is Dr. Chris McCurdy, PhD, FAAPS, professor of medicinal chemistry at the University of Florida and a world expert on the pharmacology of kratom and other plant-derived medicinal compounds. We discuss kratom’s wide-ranging effects, including its use for boosting energy, enhancing mood, managing pain and as a potential opioid substitute, while also explaining its critical safety concerns and addictive potential, especially for kratom-derived/isolate products. We also discuss plant-based compounds more generally for their potential benefits and risks. Dr. McCurdy offers a balanced perspective on kratom and other plant-based and naturally occurring medicinal compounds, highlighting and contrasting their promise for human health with potential serious risks. Episode show notes: https://go.hubermanlab.com/uFp1jn2 *Thank you to our sponsors* AG1: https://drinkag1.com/huberman David Protein: https://davidprotein.com/huberman Eight Sleep: https://eightsleep.com/huberman ROKA: https://roka.com/huberman Function: https://functionhealth.com/huberman *Follow Huberman Lab* Instagram: https://www.instagram.com/hubermanlab Threads: https://www.threads.net/@hubermanlab X: https://twitter.com/hubermanlab Facebook: https://www.facebook.com/hubermanlab TikTok: https://www.tiktok.com/@hubermanlab LinkedIn: https://www.linkedin.com/in/andrew-huberman Website: https://www.hubermanlab.com Newsletter: https://www.hubermanlab.com/newsletter *Dr. Chris McCurdy* University of Florida academic profile: https://pharmacy.ufl.edu/profile/mccurdy-christopher Google Scholar: https://scholar.google.com/citations?user=wxLykmcAAAAJ&hl=en Translational Drug Development Core (University of Florida): https://www.ctsi.ufl.edu/research/laboratory-services/translational-drug-development-core LinkedIn: https://www.linkedin.com/in/christopher-mccurdy-bsph-phd-faaps-9b20542 *Timestamps* 00:00:00 Chris McCurdy 00:02:51 Kratom (Mitragyna speciosa), Origin, Effects, Low vs High Doses 00:07:19 Sponsors: David Protein & Eight Sleep 00:10:07 Kratom, Traditional Use vs Commercial Kratom Products, Absorption 00:17:00 Kratom Products, Serving Size, Kids; Semi-Synthetics; Tool: Understand Kratom Product Labels 00:23:16 Kratom Products & Various Desired Effects; Physical Dependence 00:32:53 Different Kratom Usage Patterns, Opioid Dependence 00:36:59 Alkaloid Compounds, Nitrogen, Nicotine; Animals & Self-Experimentation 00:47:47 Sponsors: AG1 & ROKA 00:51:05 Medicine Development, Disconnection from Nature, Product Concentrations 00:59:00 Alkaloids & Natural Products, Opium Poppy, Coca Leaf, Tool: Kratom Leaf vs Extracts (Kratom-Derived/Kratom Isolates) 01:09:06 Is It Safe for Kids to Consume Kratom Products? 01:12:19 Kratom, Energy, Mood & Pain Management, Dose; Caffeine 01:16:56 Respiratory Depression & Kratom Products 01:20:16 Sponsor: Function 01:22:04 Kratom Leaf vs Derivatives, FDA Regulations, Usage Guidelines 01:26:59 Kratom, Alcohol Consumption, Respiratory Failure? 01:29:09 Kratom Alkaloids, Mood & Stimulant Effects, Multiple Pathways for Pain Relief 01:38:17 Plant Alkaloids & Chemical Defense, Kratom & Antifungal Alkaloids; Geckos 01:44:35 White, Red & Brown Vein Kratom, Leaf Processing; Terpenes 01:51:08 Kratom as an Anti-Depressant?; Discontinuing Kratom Use, Opioid Use 01:58:03 Kratom, Drug Interactions & Seizure, Opioids 02:01:51 Cacao Beans, Chocolate 02:09:34 Coca-Cola, Coca Plant & Cocaine, History of Soft Drinks 02:19:49 Career Journey, Pharmacy, Chemistry & Education, Lobelia 02:28:44 Nicotine; Natural Products & Career Journey, Salvia divinorum, Kratom 02:40:22 Zero-Cost Support, YouTube, Spotify & Apple Follow & Reviews, Sponsors, YouTube Feedback, Protocols Book, Social Media, Neural Network Newsletter Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer

SPEAKERS

Andrew Huberman
host
Dr. Chris McCurdy
guest

EPISODE SUMMARY

In this episode of Huberman Lab, featuring Andrew Huberman and Dr. Chris McCurdy, Dr. Chris McCurdy on Huberman Lab: Why Kratom Misleads explores kratom’s Double-Edged Sword: Pain Relief, Stimulant, And Hidden Dangers Andrew Huberman and medicinal chemist Dr. Chris McCurdy dissect kratom, a Southeast Asian tree whose leaf has long been used traditionally as a mild stimulant, mood elevator, and pain reliever, but is now sold in highly altered forms across the U.S. and beyond. They distinguish between traditional leaf/tea, crude powders, concentrated extracts, and semi-synthetic isolates that behave like full opioids. McCurdy explains kratom’s complex pharmacology across opioid, serotonin, and adrenergic systems, why dose and product type radically change risk, and how some people successfully use it as an off-ramp from opioids while others become dependent on kratom itself. The conversation broadens into how many modern drugs started as plant products (coca, cacao, willow, tobacco, GLP‑1, etc.), how industrial concentration and marketing distort “natural” medicines, and why clearer regulation and public education are urgently needed.

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