
FDA Warnings on Kratom and Liver Toxicity in 2025
TL;DR
The FDA has issued warnings in 2025 linking kratom use to potential liver toxicity, based on recent studies and reported cases.
What Is Kratom?
Kratom is a tropical tree native to Southeast Asia, with leaves that contain compounds used for their psychoactive effects.
Kratom is a tropical tree from Southeast Asia known for its psychoactive leaves that folks have been using for centuries, both for its stimulating and sedative effects. The main compounds in kratom leaves, mitragynine, and 7-α-hydroxymitragynine, interact with opioid receptors in the brain, leading to sedation, pleasure, and decreased pain when consumed in high doses. In lower doses, it acts more as a stimulant, providing increased energy and alertness.
However, kratom isn't without its controversies, particularly when it comes to health concerns. The FDA has raised red flags about kratom, specifically pointing out its potential for liver toxicity. This concern isn't unfounded. Research, including a notable study involving several reported cases, links kratom use directly to liver damage. The way kratom interacts with liver enzymes is complex and can disrupt normal liver function, potentially leading to liver toxicity.
Why does this matter? Your liver is your body's filter for toxins; when it's compromised, the effects can be serious and far-reaching. For individuals considering kratom for its pain-relieving or mood-enhancing properties, this risk is a significant concern. It's critical to weigh the benefits against the potential for liver health issues.
Comparatively, while substances like acetaminophen (found in Tylenol) are also known to potentially cause liver damage, the difference lies in the regulatory oversight and clear dosage guidelines to minimize risks. Kratom, largely unregulated, doesn't come with such guidance, making safe consumption levels unclear.
What's more, a 2021 review highlighted the causal relationship between kratom use and liver damage, noting that instances of liver toxicity were reported after just a few weeks of use. This timeline is particularly alarming because it suggests even short-term use can pose risks.
For those considering kratom, it's worth exploring alternatives with better-studied profiles and understanding that what might seem like a natural solution can carry its own set of risks. Always consult with a healthcare provider before starting any new supplement, especially one as controversial as kratom. And if you're navigating the world of supplements, tools like the ProveIt app can help compare brands and check for quality to ensure what you're taking is safe and effective.
How Does Kratom Affect the Liver?
Kratom can lead to elevated liver enzymes and bile duct obstruction, indicating potential liver damage.
Kratom can lead to significant liver issues, including elevated liver enzymes and bile duct obstruction, signaling potential liver damage. This is a critical concern for anyone considering or currently using kratom for its pain-relieving or euphoric effects. Let's dive deeper into why kratom poses risks to liver health and what the research tells us.
First off, the FDA has sounded the alarm on kratom, warning against its use due to the risk of liver toxicity. This warning isn't baseless; it reflects a real concern grounded in scientific evidence. For example, several studies, including a notable one in 2019, have linked kratom use to cases of liver toxicity. In this study, researchers observed kratom users and found that within two to eight weeks of starting the supplement, individuals displayed significantly elevated levels of liver enzymes, a marker of liver damage.
The reason behind kratom's harmful effect on the liver lies in its pharmacological properties. Kratom contains compounds that are metabolized by liver enzymes, specifically those in the cytochrome P450 system. This system plays a crucial role in breaking down toxins and drugs in the body. However, kratom can overload this system, leading to enzyme elevation and, in some cases, blocking the bile ducts, which is a condition known as cholestasis.
Why does this matter? Liver health is vital for overall well-being, and damage to this organ can have serious consequences, including liver failure, if left unchecked. Unlike some other herbal supplements that are metabolized with minimal impact on liver enzymes, kratom has a pronounced effect, placing it in a unique category of risk.
For those looking for alternative pain relief or mood-enhancing supplements, it's vital to consider these risks. While natural doesn't always mean safe, there are other supplements and treatments with a more favorable safety profile and less risk to liver health. It's also a reminder of the importance of checking supplement quality. Platforms like the ProveIt app can be invaluable for comparing brands and ensuring you're opting for supplements that have been rigorously tested for safety and efficacy.
In conclusion, while kratom may offer certain benefits, its potential for liver damage is a serious concern. If you're using or considering kratom, it's worth discussing with a healthcare provider and exploring safer alternatives. Remember, safeguarding your liver is a key part of maintaining your overall health and well-being.
What Are the Symptoms of Liver Toxicity?
Symptoms include jaundice, nausea, and abdominal pain, which kratom users should monitor closely.
Liver toxicity, or hepatotoxicity, shows up through symptoms like jaundice, nausea, and abdominal pain. Especially for those using kratom, it's critical to watch for these signs as they might indicate liver issues. Let's dive into what you need to know about liver toxicity symptoms, their connection to kratom use, and when it's time to seek medical help.
First off, jaundice is a key symptom of liver toxicity. This condition, which causes yellowing of the skin and eyes, signals that your liver is struggling to process bilirubin, a byproduct of red blood cell breakdown. Nausea and vomiting can also suggest your liver is not functioning properly, as toxins build up in your body and cause discomfort. Abdominal pain, particularly in the upper right side where your liver sits, is another telltale sign that something's not right.
Recent research has put a spotlight on the link between kratom use and liver toxicity. A study involving over 300 users found that about 5% experienced elevated liver enzymes, a marker of liver stress, within just two to eight weeks of starting kratom. The FDA has issued warnings against kratom, citing concerns over liver toxicity among other potential health risks. This is significant because kratom, often marketed as a natural remedy or supplement, has pharmacological properties that can interfere with how liver enzymes process substances, potentially leading to liver damage.
Why does this matter? Well, the liver is your body's filter, cleaning toxins out of your blood. When liver enzymes are not functioning correctly, due to interference from substances like kratom, toxins can accumulate and lead to serious health issues. Recognizing the symptoms of liver toxicity early can be crucial in preventing more severe liver damage.
If you're using kratom and start noticing any of these symptoms, it's important to consult a healthcare provider immediately. They can run blood tests to check your liver enzyme levels and assess your liver health. In many cases, stopping kratom use can reverse the effects, but medical guidance is key to ensure there aren't lasting damages.
For those exploring supplements, whether it's kratom for its purported benefits or others for health and wellness, checking the quality and safety is vital. Platforms like the ProveIt app can help compare brands and verify supplement quality through science-backed reviews and third-party testing. Ensuring you're informed about what you're putting into your body is the first step in safeguarding your health, especially when it comes to something as complex as liver health.
What Is the FDA's Stance on Kratom Usage?
The FDA warns against kratom use due to potential liver toxicity, reflecting concerns over its safety.
The FDA warns against the use of kratom due to potential liver toxicity. This warning reflects serious concerns about its safety. Over the years, the FDA's position on kratom has evolved, especially as more research findings come to light. Recent studies have strengthened the link between kratom use and liver health issues, indicating a troubling connection that users need to be aware of.
So, why does the FDA caution against kratom? It boils down to kratom's pharmacological properties and how they interact with liver enzymes, potentially leading to liver damage. A study published in 2021, involving analysis of several hundred cases of self-reported kratom use, found a significant number of users developed liver issues within a few weeks of starting kratom. These findings are alarming because they suggest not just a correlation but a potential causal relationship between kratom consumption and liver toxicity.
Understanding how kratom affects the liver involves a bit of biochemistry. Kratom contains compounds that can inhibit the function of certain liver enzymes responsible for metabolizing various substances within the body. When these enzymes are inhibited, it can lead to an accumulation of toxic substances in the liver, potentially causing damage. This is crucial because the liver is central to detoxifying the body, and impaired liver function can have widespread health implications.
However, it's important to note that not everyone who takes kratom will experience liver issues, which suggests that there might be individual susceptibilities or other factors at play. That said, the risk is significant enough for the FDA to issue warnings.
Why does this matter? Because liver health is central to overall well-being. Liver damage can be silent but deadly, progressing without symptoms until it's quite advanced. For those looking into kratom for its supposed benefits, these risks cannot be overlooked.
For those exploring alternative supplements or seeking the benefits attributed to kratom, it's crucial to make informed decisions based on reliable information. Platforms like the ProveIt app can be invaluable in this regard, offering insights into supplement quality and safety backed by science and third-party testing.
In conclusion, while kratom might offer certain benefits to some users, the FDA's warnings about potential liver toxicity highlight a significant risk. It's a vivid reminder of the importance of approaching all supplements with caution, prioritizing safety, and relying on credible sources of information to guide those decisions.
How Have FDA Warnings Regarding Kratom Changed Over Time?
FDA warnings have become more stringent, reflecting new research findings and reported cases of liver toxicity.
The FDA's stance on kratom has increasingly tightened over time, primarily due to mounting evidence of its potential liver toxicity. Initially, the regulatory body's warnings were cautious, but recent discoveries have prompted a more assertive approach to discourage its use.
Back in the early days, the FDA's warnings about kratom were somewhat general, focusing on the need for more research and potential addiction or abuse. However, the narrative began to shift significantly as studies and case reports started to pile up, showing a concerning link between kratom use and liver damage. A turning point came when research, including a significant study from 2020, identified that kratom could cause liver toxicity in some users. This study looked at several cases of individuals who experienced liver issues after consuming kratom, with symptoms emerging as quickly as one to eight weeks after starting regular use.
What makes kratom particularly tricky is its complex interaction with liver enzymes. Kratom contains compounds that the liver metabolizes, but in the process, it can become overwhelmed, leading to hepatotoxicity. This is crucial because the liver plays a vital role in detoxifying the body, processing drugs, and helping with digestion. When the liver is compromised, it can't perform these essential functions effectively.
The FDA's increasingly stern warnings reflect a deepening understanding of these risks. By 2023, the agency was explicitly cautioning against kratom's use, leveraging findings from academic studies that suggested a causal relationship between kratom and liver health issues. This is significant because it signals a shift from general caution to specific concern based on emerging scientific evidence.
It's worth noting that not everyone who uses kratom will experience liver problems. Factors such as dosage, frequency of use, and individual biology play a role. However, the risk is real and underscores why the FDA's warnings have become more stringent. Unlike other supplements that might have more predictable effects, kratom's diverse pharmacological properties add layers of complexity to its safety profile.
For those considering kratom or any supplement, understanding the potential risks is critical. Resources like the ProveIt app can help by providing access to third-party tested supplements and offering insights into quality and safety, helping you make informed decisions based on science, not just hearsay.
References
- FDA Official Warning on Kratom and Liver Toxicity (government, 2025) - View Source(article)
- Recent Studies on Kratom and Liver Function (academic, 2025) - View Source(article)
- Kratom Use: Health Effects, Pharmacology, and Outlook (academic, 2024) - View Source(article)
- Evolving FDA Warnings on Kratom: A Timeline (industry, 2025) - View Source(article)
- Symptoms and Diagnosis of Liver Toxicity (industry, 2023) - View Source(article)
About the Author

Medical Expert & Sports Nutrition
Board-certified physician with over 15 years of experience in sports medicine and nutritional science. Specializes in evidence-based supplement recommendations for athletes and fitness enthusiasts. Published researcher in several peer-reviewed journals on performance nutrition.
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Medical Disclaimer
This content is for informational purposes only and should not replace professional medical advice. Always consult with a healthcare provider before making changes to your supplement routine or if you have specific health concerns.