Paraquat, a highly toxic herbicide used in commercial agriculture, is at the center of thousands of lawsuits in 2025. Plaintiffs across the U.S. are claiming that long-term exposure to Paraquat caused them to develop Parkinson’s disease. These lawsuits argue that manufacturers failed to warn users about the known dangers associated with the chemical.
With settlement talks underway and major bellwether trials scheduled, the Paraquat litigation is becoming one of the largest mass torts in the country. This blog breaks down what you need to know, from the science behind Paraquat to who qualifies for compensation, the countries where it’s banned, and the most recent developments in 2025.
What Is Paraquat?
Paraquat dichloride is a non-selective, fast-acting herbicide introduced in the 1960s. It is widely used in commercial agriculture for weed and grass control, especially in no-till farming practices. Due to its high toxicity, the U.S. Environmental Protection Agency (EPA) has classified Paraquat as “restricted use,” meaning only licensed applicators can handle it.
Despite its dangers, Paraquat remains popular due to its effectiveness. It is manufactured and sold under various brand names, including Gramoxone, primarily by Syngenta and Chevron.
Health Risks Linked to Paraquat Exposure
Scientific studies have linked Paraquat exposure to severe health risks, especially Parkinson’s disease.
The mechanism? Paraquat induces oxidative stress that damages dopamine-producing neurons in the brain, the same neurons impacted in Parkinson’s disease.
Key findings include:
- A 2024 California study confirmed increased Parkinson’s risks in exposed individuals.
- A 2024 meta-analysis strengthened the connection between long-term exposure and neurodegenerative effects.
Accidental ingestion is also highly lethal. A 2025 study from Odisha, India, showed a 70% mortality rate among paraquat poisoning victims.
Legal Basis for the Paraquat Lawsuits
The lawsuits primarily argue that manufacturers:
- Failed to warn users about Parkinson’s disease risks
- Ignored or suppressed internal research on the dangers
- Continued selling Paraquat despite safer alternatives
These claims are consolidated into a federal Multi-District Litigation (MDL 3004) in the Southern District of Illinois. Syngenta and Chevron are the primary defendants.
2025 Legal Updates
The Paraquat litigation has rapidly evolved in 2025:
- Over 6,000 pending lawsuits are now part of the federal MDL.
- Settlement discussions began in April 2025, with Syngenta signing a preliminary agreement to resolve many claims.
- Discovery paused: Courts have temporarily halted case preparation to focus on finalizing settlements.
- Bellwether trials are scheduled for October 14, 2025, and April 6, 2026.
- Case dismissals: In June 2025, around 100 cases were dismissed due to incomplete paperwork.
These developments indicate the courts are moving toward resolution—either through large-scale settlements or trial precedents.
Who Can File a Paraquat Lawsuit?
You may qualify to file a lawsuit if:
- You worked as a licensed applicator, farmworker, or near farms using Paraquat
- You developed Parkinson’s disease after long-term exposure
- You can document your exposure through records, testimony, or proximity
Family members of deceased victims may also file wrongful death claims.
What Evidence Is Required?
To build a strong case, plaintiffs typically need:
- Medical records confirming a Parkinson’s diagnosis
- Employment or usage history proving Paraquat exposure
- Documentation of application dates, training, or proximity
- Expert medical testimony linking symptoms to exposure
Completion of a Plaintiff Assessment Questionnaire (PAQ) is usually required in the MDL process.
Countries Where Paraquat Is Banned or Used
Paraquat has been banned in over 60 countries due to health risks. Banned countries include:
- European Union (since 2007)
- United Kingdom
- China (2017)
- Brazil, Chile, Malaysia, Thailand, Australia, and more
In India, only the state of Kerala has banned Paraquat. Other regions like Odisha are pushing for a national ban following fatal poisoning incidents.
In contrast, the U.S. continues to allow Paraquat use under strict licensing regulations. Thailand, despite mounting evidence, still allows its use in agriculture.
Have There Been Any Settlements?
Yes. In April 2025, Syngenta reached a letter of agreement to settle thousands of cases in the MDL and in California state court. Although terms are still being finalized, the settlement talks mark a major turning point in the litigation.
Estimates suggest plaintiffs could receive between $700,000 to $1.5 million depending on exposure levels, medical history, and damages claimed.
Formal offers are expected to roll out in the second half of 2025.
Compensation You May Be Entitled To
Compensation in Paraquat cases may include:
- Medical expenses (past and future)
- Lost wages and reduced earning capacity
- Pain and suffering
- Punitive damages
- Wrongful death compensation for surviving family members
Amounts vary based on individual circumstances, with higher payouts for severe health outcomes and longer exposure.
How to File a Paraquat Lawsuit in 2025
If you suspect you were harmed by Paraquat, here are the steps:
- Consult an experienced attorney handling mass tort or product liability cases.
- Gather medical records confirming your diagnosis.
- Document your exposure history, including job roles, training certificates, or living near farms.
- Complete required forms like the Plaintiff Assessment Questionnaire.
- Stay in communication with your law firm for updates and settlement offers.
Lawyers can guide you through the MDL process, negotiate offers, and prepare for trial if needed.
How Law Firms Are Helping Victims
Law firms handling Paraquat cases offer:
- Free case evaluations
- Access to medical and scientific experts
- Assistance with documentation and MDL paperwork
- Legal representation in court or during settlement talks
These firms often work on a contingency basis—meaning you pay nothing unless compensation is recovered.
Final Thoughts
The Paraquat lawsuits in 2025 represent a critical moment for victims of toxic chemical exposure. Scientific evidence continues to strengthen the connection between Paraquat and Parkinson’s disease. With settlement discussions underway and trials approaching, this may be the best time to step forward and explore your legal options.
If you or a loved one were exposed to Paraquat and later diagnosed with Parkinson’s disease, consult a law firm specializing in mass tort litigation. You may be eligible for substantial compensation—and a chance to hold manufacturers accountable.
