Kava-Related Poison Center Calls Skyrocket 256% Amid Unregulated Market Boom
Marketed as a natural, hangover-free alternative to alcohol and sold in trendy cafes and vape shops nationwide, the plant-based beverage kava is driving a dramatic surge in poisonings across the United States. Researchers from the University of Virginia Health's Blue Ridge Poison Center have uncovered alarming data showing calls to poison centers involving kava increased by 256 percent between 2011 and 2025.
From Traditional Ceremonies to Modern Health Crisis
Kava, a plant native to the Pacific Islands with centuries of traditional ceremonial use, has transformed into a largely unregulated commercial product in the US market. Sold as concentrated extracts, capsules, and ready-to-drink beverages, these products are frequently promoted as a healthy method for relaxation without alcohol's associated risks.
The fundamental problem, according to experts, lies in potency. Commercial kava products often contain two to ten times the concentration of active ingredients called kavalactones compared to traditional preparations. This dramatic increase raises significant risks of rapid heartbeat, severe vomiting, neurological complications, and liver injury.
Shifting Demographics of Poisoning Victims
The study reveals a substantial shift in who is being poisoned by kava products. During the early 2000s, calls primarily involved young children and women. Today, the overwhelming majority of exposures involve men aged 20 and older, reflecting aggressive marketing strategies targeting college campuses and vape shop customers.
Researchers also documented a concerning trend of kava being combined with kratom, a psychoactive plant with opioid-like effects. By 2025, kratom was involved in 30 percent of kava-related poison center calls, driving severe outcomes including seizures, hypertension, and tremors.
Poison Center Data Reveals Alarming Patterns
Published in the CDC's Morbidity and Mortality Weekly Report, the research utilized data from the National Poison Data System, which collects information from all 53 US poison centers. The team analyzed every kava-related call made between January 2000 and December 2025, examining:
- Patient age and sex
- Whether kava was taken alone or with other substances
- Specific symptoms experienced
- Severity of medical outcomes
- Hospitalization requirements
Following a steep 87 percent decline in kava exposure reports after the FDA's 2002 warning about liver injury risks, cases began climbing sharply again in 2011. Between 2000 and 2025, poison centers logged 3,101 kava-related calls, with serious outcomes becoming increasingly common.
Escalating Severity and Regulatory Gaps
In 2000, only 12 percent of kava exposures led to severe medical problems. By 2024, that figure had jumped to 39 percent, with eight deaths reported over the 25-year study period. Single-substance kava exposures typically caused vomiting, drowsiness, dizziness, and rapid heartbeat, but combinations with kratom produced more dangerous effects including seizures and high blood pressure.
"We are now experiencing an increase in calls again as new kava products enter the market, including products mixed with other substances such as kratom that can cause adverse interactions," said Dr. Chris Holstege, director of the Blue Ridge Poison Center.
Unlike countries such as Australia, which limits daily kavalactone intake to 250 milligrams, the United States maintains no such regulations. Some manufacturers advertise more than 250 milligrams of active ingredients per single 30-milliliter serving, often with multiple servings per container. Without standardized manufacturing or content verification, actual potency could be even higher.
Public Health Implications and Future Concerns
The rise in kava-related poison center calls mirrors the broader boom in nonalcoholic beverages as consumers seek alcohol-free alternatives. These products are frequently sold online and in vape shops, marketed as social enhancers without hangovers, explaining why young adults now constitute the majority of exposure reports.
Health experts warn that chronic use of high-potency kava products has been linked to liver damage, seizures, rapid heartbeat, and high blood pressure. Researchers emphasize that continued promotion without adequate product content verification, consumer education regarding adverse health effects, and clinical awareness of evolving exposure patterns represents an ongoing public health concern.
Of all kava-related calls, 43 percent involved multiple substances. While alcohol and benzodiazepines were the most common co-ingredients for years, kratom emerged as a significant factor in 2017. Liver enzyme elevations were also more common with kava-kratom combinations than with kava alone.
As the market rebounds with new product formats, aggressive wellness marketing, and wider availability, poison center data continues to serve as an early alert system for dangers associated with these emerging substances.
