Is Kratom an Opioid? Understanding How Kratom Is Classified

Key Takeaways:

• Kratom is not classified as an opioid botanically or legally, since it comes from Mitragyna speciosa, a tree in the coffee family, rather than the opium poppy that produces traditional opiates.
• Kratom’s active compounds, mitragynine and 7OH kratom, bind to the same mu-opioid receptors as morphine and oxycodone, which is why kratom can produce opioid-like pain relief, euphoria, dependence, and withdrawal.
• Kratom’s legal status varies significantly by state; it is not federally scheduled, but states including Alabama, Arkansas, Indiana, Rhode Island, Vermont, and Wisconsin have banned it.
• Because kratom isn’t a traditional opiate, it does not appear on standard drug tests; detecting it requires a specialized kratom drug test built to identify mitragynine and 7OH kratom specifically.

Question:

Is kratom considered an opioid?

Answer: 

This blog addresses a common point of confusion: is kratom an opioid? The answer is nuanced. Botanically and legally, kratom is not an opioid, since it comes from a Southeast Asian tree unrelated to the opium poppy. However, its active compounds, mitragynine and 7-hydroxymitragynine (7OH kratom), bind to the same mu-opioid receptors as morphine and oxycodone, producing similar pain relief, euphoria, and risk of dependence. The post walks through kratom’s origins, its modern forms (including kratom pills, shots, beverages, vapes, and branded products like Opia kratom), its patchwork legal status across states, and how this classification affects drug testing. Because kratom isn’t a traditional opiate, standard panels don’t detect it; only specialized kratom drug tests can. The post closes by helping readers recognize signs of concerning use and pointing them toward treatment resources and information on what standard drug panels are designed to detect.

If you or someone you love has been using kratom, you’ve probably run into conflicting information. Some sources call it a natural supplement. Others warn it behaves like a dangerous opioid. Both descriptions carry a piece of the truth, and that overlap is exactly what makes kratom’s classification so confusing.

This confusion matters beyond curiosity. How kratom is classified affects everything from its legal status to how it interacts with drug testing to whether someone recognizes their own use as something worth addressing. Understanding where kratom fits, and where it doesn’t, can help you make sense of the information you’re seeing and take the next step with clarity.

This guide walks through what kratom actually is, breaks down its active compounds, and answers the central question directly: is kratom an opioid? We’ll also look at how kratom differs from traditional opioids, how it behaves similarly, its shifting legal status, and what its classification means when it comes to drug testing.

What Is Kratom? A Brief Overview

Kratom comes from the leaves of Mitragyna speciosa, a tropical tree native to Southeast Asia. Communities in Thailand, Indonesia, and Malaysia have used kratom leaves for generations, often chewed fresh or brewed into tea, for their stimulant and sedative properties. Learn more about what kratom is and why people use it here.

In the United States, kratom has found a much wider audience. It’s frequently marketed as a natural option for managing pain, easing anxiety, or boosting energy. Part of what makes kratom appealing, and part of what makes it complicated, is its dose-dependent effect: at lower doses, it tends to act as a mild stimulant, while at higher doses, its effects shift toward sedation and pain relief, similar to what someone might feel from an opioid.

That dual personality is at the heart of the classification question. Kratom doesn’t fit neatly into existing drug categories, which has left regulators, healthcare providers, and everyday users trying to figure out exactly what it is.

The Active Compounds in Kratom: Mitragynine and 7OH Kratom

To understand kratom’s classification, it helps to look at what’s actually happening on a molecular level. Kratom’s effects come primarily from two compounds:

• Mitragynine: The primary alkaloid found in kratom leaves, responsible for most of its stimulant and analgesic effects.
• 7-hydroxymitragynine (7OH kratom): A metabolite of mitragynine that is significantly more potent and binds more strongly to opioid receptors.

Both compounds interact with mu-opioid receptors in the brain, the same receptors that drugs like morphine, oxycodone, and heroin activate. According to the U.S. Food and Drug Administration (FDA), kratom’s effects on opioid receptors are a primary reason the agency has raised safety concerns about the substance.

7OH kratom in particular has drawn increasing regulatory attention. Because it’s more concentrated and produces effects that closely resemble those of traditional opioids, products high in 7OH kratom are considered by some researchers to carry a greater risk of dependence than kratom leaf products with lower concentrations. The FDA has published a specific assessment of the scientific data and safety concerns surrounding 7-hydroxymitragynine, underscoring how seriously this compound is being studied.

Is Kratom an Opioid? The Technical Classification

Here’s the direct answer: no, kratom is not technically classified as an opioid. The term “opioid” traditionally refers to compounds derived from, or chemically related to, the opium poppy (Papaver somniferum). Kratom comes from an entirely different plant, Mitragyna speciosa, which is part of the coffee family, not the poppy family.

Botanically and chemically, kratom’s alkaloids are structurally distinct from morphine, codeine, and other classic opiates. This is a big part of why is kratom an opioid comes up so often as a search question. It sits in a gray zone: not an opioid by origin, but functionally similar enough in effect to raise the same kinds of concerns.

The Drug Enforcement Administration (DEA) has considered scheduling kratom as a controlled substance in the past but has not done so at the federal level. This lack of formal scheduling is part of why kratom occupies such an unusual space in both law and medicine.

How Kratom Differs From Traditional Opioids

While kratom shares some effects with opioids, there are meaningful differences worth understanding:

• Botanical origin: Kratom comes from a tropical tree in the coffee family, not the opium poppy that produces traditional opiates.
• Chemical structure: Mitragynine and 7OH kratom are structurally distinct from morphine, codeine, and synthetic opioids, even though they act on similar receptors.
• Dose-dependent effects: Kratom can act as a stimulant at low doses, a property not typically associated with traditional opioids.
• Legal status: Traditional opioids like morphine and oxycodone are federally controlled substances. Kratom is not federally scheduled, though some states have banned it individually.
• Regulatory oversight: Prescription opioids go through rigorous FDA approval processes. Kratom products are sold largely as unregulated supplements.

These differences are real, and they matter. But they don’t tell the whole story, because kratom’s behavior in the body tells a more complicated tale.

How Kratom Behaves Like an Opioid

Despite its different origin, kratom’s functional similarities to opioids are significant enough that they shape how it’s used, misused, and eventually tested for:

• Same receptor activity: Mitragynine and 7OH kratom bind to mu-opioid receptors, the same receptors targeted by morphine and oxycodone.
• Pain relief: At higher doses, kratom can produce meaningful analgesic effects similar to prescription opioids.
• Euphoria: Many users report mood-elevating effects consistent with opioid-receptor activation.
• Physical dependence: Regular use of kratom can lead to tolerance, meaning more is needed over time to achieve the same effect.
• Withdrawal symptoms: People who stop using kratom after regular use often experience withdrawal symptoms that closely resemble opioid withdrawal, including muscle aches, irritability, and cravings.

This overlap explains why kratom is sometimes used, informally and without medical supervision, as a substitute during opioid withdrawal. It also explains why treatment providers who specialize in opioid use disorder often ask specifically about kratom use, since it can complicate a person’s withdrawal management and recovery plan.