Can Ashwagandha Cause Liver Damage? Case Series Evidence
This is a retrospective case series from multiple centers in India, not a trial, and it describes patients whose records were reviewed after they presented with liver injury. Between January 2019 and December 2022 the investigators identified 23 patients with liver injury from ashwagandha, and they report 8 of them in detail: the patients who had taken a single-ingredient ashwagandha formulation. Anyone taking ashwagandha as part of a multiherbal formulation, or alongside other known hepatotoxic supplements or medicines, was excluded, and each patient had a diagnostic workup to reasonably rule out competing causes. The cohort was male predominant and cholestatic hepatitis was the commonest presentation. Five patients had underlying chronic liver disease. Three presented with acute-on-chronic liver failure, and all three died on follow-up. Where the implicated product could be retrieved and chemically analyzed, it contained only natural phytochemicals, with no adulteration or contamination. The authors describe this as the first and currently largest series of ashwagandha-related herb-induced liver injury from India.
Dr. Kumar’s Take
This series is a serious counterweight to the generally positive research on ashwagandha for sleep and stress. Two things change how I read it. The first is the chemical analysis: the retrieved formulations were not adulterated or contaminated, so the injury tracks back to the herb itself rather than to a bad batch or a spiked product. That removes the reassurance most people reach for when a supplement hurts someone. The second is who died. The three patients who presented with acute-on-chronic liver failure all had a liver that was already compromised, and none of them survived follow-up. In the others, the injury dragged on but resolved on its own, and one went on to chronic injury.
So my position is not that ashwagandha is uniformly dangerous. It is that the margin for error collapses if you already have liver disease, and that a supplement taken without any medical involvement, for sleep or stress, is not a low-stakes decision in that group. I would not use it in anyone with known chronic liver disease. In everyone else, I would treat new fatigue, nausea, dark urine, or jaundice on ashwagandha as a reason to stop the supplement and get liver tests, not as a reason to wait it out.
Key Findings
Twenty-three patients with ashwagandha-associated liver injury were identified across the participating centers from January 2019 to December 2022. Eight of these patients, all of whom had taken a single-ingredient ashwagandha formulation, form the reported series. The cohort was male predominant, and cholestatic hepatitis was the commonest presentation.
Five patients had underlying chronic liver disease. Three presented with acute-on-chronic liver failure, and all three died on follow-up. In the remaining patients the liver injury was prolonged but self-limiting, and one patient progressed to chronic herb-induced liver injury.
Liver biopsy showed predominantly cholestatic features together with hepatocellular necrosis and portal-based inflammation in which lymphocytes and eosinophils predominated. Chemical analysis of the retrieved formulations found only natural phytochemicals, with no adulteration and no contamination.
Brief Summary
The investigators searched institutional electronic medical records at multiple Indian centers for cases of ashwagandha-related herb-induced liver injury. Patients taking ashwagandha within multiherbal formulations, or together with other known hepatotoxic supplements or medicines, were excluded so that the injury could be attributed to ashwagandha alone. Every patient underwent a detailed workup to reasonably exclude competing causes of liver disease. Where the implicated product could be obtained, it was sent for chemical analysis. The report covers presentation, biopsy findings, and outcome, and is accompanied by a review of the published literature.
Study Design
This was a retrospective, multicenter case series based on review of institutional electronic medical records. Case selection was deliberately restrictive: single-ingredient ashwagandha only, with concurrent hepatotoxic supplements and medicines as exclusion criteria, and with a diagnostic workup in each patient to exclude competing causes. Liver biopsy was used to characterize the pattern of injury. Retrieved herbal formulations were subjected to chemical analysis to test whether adulteration or contamination, rather than ashwagandha itself, explained the injury.
Results You Can Use
Ashwagandha can injure the liver, and in this series the typical picture was cholestatic hepatitis rather than a mild enzyme bump. Injury was not explained by a contaminated or adulterated product: the formulations that were analyzed contained only natural phytochemicals.
Pre-existing liver disease is the risk factor that mattered most here. Five of the eight reported patients had underlying chronic liver disease, and the three who presented with acute-on-chronic liver failure all died on follow-up. In the others, the liver injury was prolonged but self-limiting, and one patient progressed to chronic injury.
Recognizing the problem early and stopping the supplement is the practical lever. Symptoms that point toward liver injury, including jaundice, warrant medical assessment rather than watchful waiting.
Why This Matters For Health And Performance
Ashwagandha is widely used for stress and sleep, and it is marketed as a supplement rather than as a drug. Manufacturers of herbal and dietary supplements are not required to conduct preclinical safety and efficacy studies before marketing, so harms tend to surface only through postmarketing reports like this one. That is exactly how ashwagandha liver injury came to attention, initially through reports from the United States and now through this Indian series.
The finding that the analyzed products were clean matters for how people reason about supplement safety. Buying a reputable, unadulterated product is not, on this evidence, protection against the injury described here.
How to Apply These Findings in Daily Life
- Take the liver risk seriously: Ashwagandha is capable of causing cholestatic hepatitis, and a clean product is not a guarantee of safety
- Avoid it if you have liver disease: The deaths in this series occurred in patients with pre-existing chronic liver disease who developed acute-on-chronic liver failure
- Monitor for symptoms: Watch for fatigue, nausea, abdominal pain, dark urine, and yellowing of the skin or eyes
- Discontinue if symptomatic: Stop ashwagandha and seek medical assessment, including liver tests, if these symptoms appear
- Tell your doctor you take it: Herbal supplements belong on your medication list, especially if you take other medicines
- Do not assume “natural” means low risk: Supplements are not required to demonstrate safety before they reach the shelf
Limitations To Keep In Mind
This is a retrospective case series drawn from patients who reached specialist liver centers in India, so it describes people who were injured rather than the population of everyone who takes ashwagandha, and it cannot establish how often injury occurs. Restricting the detailed report to single-ingredient formulations makes causal attribution cleaner but narrows the series to 8 of the 23 patients identified. Case series evidence also cannot separate individual susceptibility from product-level factors, and diagnosis rests on exclusion of competing causes rather than on a confirmatory test.
Related Studies And Internal Links
- Ashwagandha Extract Improves Sleep Quality: Systematic Review
- Glycine Improves Sleep Quality: Polysomnographic Evidence
- Tryptophan Supplementation Improves Sleep Quality: Meta-Analysis
- Melatonin for Sleep Disorders: Meta-Analysis Evidence
- How to Sleep Better: Science Daily Playbook
FAQs
How common is ashwagandha-induced liver injury?
A case series counts the patients who reached the centers doing the reporting, so it cannot give a rate. Across the participating Indian centers, 23 patients with ashwagandha-related liver injury were identified from January 2019 to December 2022.
What are the warning signs of ashwagandha liver toxicity?
The commonest presentation in this series was cholestatic hepatitis, so jaundice is the sign to take most seriously, along with fatigue, nausea, abdominal pain, dark urine, and pale stools.
Should I avoid ashwagandha completely due to liver injury risk?
If you have chronic liver disease, I would avoid it. The three deaths in this series were all in patients who developed acute-on-chronic liver failure on a background of existing liver disease. Otherwise, keep your doctor informed that you take it, and stop and get tested if symptoms of liver injury appear.
Conclusion
This series documents ashwagandha-induced liver injury presenting as cholestatic hepatitis, in patients taking single-ingredient formulations that chemical analysis found free of adulteration or contamination. In those with pre-existing liver disease it progressed to acute-on-chronic liver failure with high mortality, while in others it was prolonged but self-limiting. The practical response is to avoid ashwagandha with known liver disease, treat symptoms of liver injury as a reason to stop and get tested, and treat herbal supplements with the same caution as prescription medicines.
