Kratom is sold online as an herbal supplement that can help treat opioid addiction, depression, anxiety, and chronic pain. However, this is an unregulated substance that can become addictive. It can lead to various problems, including liver damage and failure.
Is Kratom Bad for the Liver?
Yes. There have been rare but documented instances of hepatotoxicity, or severe liver injury, following kratom use. Symptoms typically present within one to eight weeks after an individual begins using the substance regularly and higher dosages increase this risk.
Some of the most common symptoms include:
Fatigue
Jaundice
Dark urine
Nausea
Itchy skin
Both the National Institute of Health and the U.S. Drug-Induced Liver Injury Network (DILIN) have released studies that link kratom use to this condition. Research indicates that the certain alkaloids in kratom strain the liver’s detox mechanisms, which can overburden the organ and lead to injury.
Is Kratom Addictive?
Kratom is an opioid-like substance derived from a tree native to Southeast Asia. Although this substance is not illegal in the United States and is often sold online, it is becoming a drug of abuse for many people, particularly people who try to use it to overcome opioid addiction. This has led to several counties and states banning kratom.
Are you or someone you know struggling with addiction?
I may have a problem I am concerned for a loved oneThe drug is sold as an extract, pill, capsule, or powder. Although fewer than 1 percent of people in the US use kratom, as many as 10.3 percent of people who struggle with opioid addiction use kratom, often in an attempt to overcome their addiction to opioids and safely withdraw from the drugs.
However, tapering without medical supervision may not result in ending substance abuse. Instead, it may lead to ongoing or even increasing drug abuse.
Unfortunately, many people who take kratom develop a tolerance, as they do with opioids. They then begin abusing larger amounts to experience the same effects. This can cause serious physical harm, including to the liver.
How Does the Liver Metabolize Kratom?
The liver is the main organ responsible for metabolizing drugs and alcohol through the body. Once drugs are digested and the chemicals are shifted to the liver, these chemicals are broken down further into metabolites and slowly released into the blood.
For substances like prescription medications, using the liver’s metabolic function can help drugs release into the body at a specific pace, with few side effects. But with unregulated chemicals like kratom, it is difficult to understand safety around the dose.
One of the most serious problems with kratom is the lack of regulation. Although many containers say that there are specific dosing sizes, there is no way to know for sure. This is because kratom is sold as a dietary supplement and is therefore not subject to any legal regulation in the US.
Additionally, many additives in kratom supplements might cause liver damage. Sometimes, these may not be listed on the ingredients, or they could be incidental chemicals found in the manufacturing process that should not be there. Toxins are processed through the liver like supplements, vitamins, and prescription medications.
What Is Kratom Liver Toxicity or Hepatotoxicity?
Kratom is associated with several serious health problems, like heart damage and liver toxicity. Chronic use of kratom can cause liver damage. It often starts with symptoms like these:
- Fatigue
- Fever
- Nausea
- Itchy skin
- Dark urine after jaundice
Acute liver toxicity, or hepatotoxicity, typically sets in between one and eight weeks after regular use of kratom tablets, capsule, or powder. Severe liver toxicity can cause liver failure, as well as kidney failure and bone marrow damage. Although this is a rare condition, there have been about a dozen reports of serious liver damage due to kratom.
It is possible to recover from kratom liver toxicity. A study of eight people hospitalized for kratom-related hepatotoxicity found that all of them recovered, but this is still a very dangerous condition to experience. Without medical treatment, liver damage can lead to jaundice, organ failure, and death.

Signs of Kratom Abuse
Signs of kratom intoxication include alertness, high physical energy, and talkativeness. These effects are typically considered the opposite of opioid intoxication, which often causes relaxation and sedation. Unlike opioids, however, at high doses kratom can cause psychosis.
Other health effects associated with kratom abuse include the following:
- Nausea
- Itching
- Sweating
- Constipation
- Dry mouth
- Loss of appetite
- Increased urination
- Hallucinations
- Seizures
It is possible to overdose on kratom as well, although this typically occurs in combination with other drugs. Data from the National Poison Data System, collected between 2011 and 2017, found 11 deaths associated with kratom exposure; nine of those involved other drugs including benzodiazepines, opioids like fentanyl, and cocaine. In 2017, the Food and Drug Administration (FDA) found that there were 44 deaths associated with kratom, with at least one involving just kratom and no other substance abuse.
Although kratom is becoming a popular substance to self-medicate depression, anxiety, chronic pain, and opioid use disorder, it is unregulated and not approved for any sort of use in the US.
Substance abuse involving kratom is becoming increasingly common, which means that reports of hepatotoxicity from kratom are also increasing. If you are trying to overcome opioid use disorder, find a rehabilitation program instead that specializes in managing opioid withdrawal.
Is Kratom Liver Damage Reversible?
In most documented case studies and biopsy reports, patients who experienced liver damage attributed to kratom use recovered after stopping the substance. However, permanent damage can occur if use continues despite symptoms.
The liver has the remarkable ability to repair and restore itself to its original size and function, even after significant tissue loss or injury. However, liver regeneration cannot occur if the individual is still actively using the offending substance. In documented cases of kratom-induced liver injury, function tests usually return to normal within a few weeks or months following total cessation of use.
In rare and severe instances, the damage could lead to a more serious issue, such as hepatic failure. This is a life-threatening condition that leads to a deterioration of liver function, rendering the organ unable to perform key functions, including toxin processing. This may not be fully reversible and could lead to long-term health impacts.
Hidden Risks: Contaminants and Adulterants
Unregulated kratom often contains heavy metals or bacteria that can place additional stress on the liver. Some of the most commonly found metals include lead and nickel, while bacteria findings include salmonella and E. coli. These adulterants are found in multiple kratom forms, including powders, capsules, tablets and teas.
This contamination occurs because of a lack of regulation within the kratom industry. From production and processing to handling and testing, there are multiple points at which impurities can enter the substance. FDA warnings indicate that such risks are present and the agency strongly discourages kratom use due to this concern.
Kratom & Liver Damage FAQs
Yes, kratom can cause a specific type of acute liver injury known as cholestatic injury, which slows or stops the flow of bile from the liver.
While not everyone who takes kratom will experience this, for those who are susceptible, symptoms typically appear within 2 to 8 weeks of regular use. In severe cases, this toxicity can stress other organs, potentially leading to kidney complications if left untreated.
Direct links between kratom and cirrhosis (permanent scarring of the liver) are rare, primarily because kratom-induced liver damage is usually acute rather than chronic.
However, if a user ignores early warning signs and continues to use kratom despite active liver inflammation, the repeated injury could theoretically lead to chronic scarring over time. Most users seek help due to the severity of acute symptoms before cirrhosis develops.
The earliest warning signs often mimic a viral illness or the flu. You may experience fatigue, nausea, and low-grade fever before more specific liver symptoms appear.
As the condition progresses, the hallmark signs of cholestatic injury develop: severe itching (pruritus) all over the body, dark or “tea-colored” urine, and pale, clay-colored stools. If you notice these changes, medical attention is required immediately.
Learn more about side effects and symptoms of kratom use.
The good news is that in almost all documented cases, kratom induced liver injury is reversible once the drug is stopped. The liver is a highly resilient organ. Most patients see a complete resolution of symptoms and a return to normal liver function within a few weeks to months after quitting kratom.
However, continuing to use kratom after symptoms appear can lead to more serious, life-threatening complications.
- Kratom DrugFacts. (April 2019). National Institute on Drug Abuse (NIDA).
- Kratom Use Rare, but More Common Among People With Opioid Use Disorder. (April 2021). New York University.
- Drug Metabolism. (October 2020). Merck Manuals, Consumer Version.
- Kratom-Induced Liver Injury: A Case Series and Clinical Implications. (April 2021). Cureus.
- LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. (April 2020). National Institute of Diabetes and Digestive and Kidney Diseases.
- Kratom-Related Liver Injuries on the Rise in the US. (November 2019). The Liver Meeting.
- Kratom. (April 2020). United States Drug Enforcement Administration (DEA).
- What Is Kratom? The Popular Herbal Supplement Has Caught Flak From the FDA. (October 2019). NBC News.