Why is Syngenta stopping production of paraquat?

Syngenta is stopping paraquat production due to significant competition from generic producers and its minimal contribution to global sales, alongside facing thousands of lawsuits alleging the pesticide is linked to Parkinson's disease.

What is the connection between paraquat and Parkinson's disease?

Thousands of lawsuits allege that exposure to Syngenta's paraquat products has led to the development of Parkinson's disease in individuals.

Is paraquat still approved for use?

While Syngenta is ceasing its production, other companies produce generic versions of paraquat, and it remains approved for use in the US, pending further evaluation by the EPA.

Home / Environment / Syngenta Quits Paraquat Amid Parkinson's Lawsuits

Syngenta Quits Paraquat Amid Parkinson's Lawsuits

4 Mar

•

Summary

Syngenta will stop producing paraquat weed killer by the end of June.
Thousands of lawsuits link Syngenta's paraquat to Parkinson's disease.
Company cites competition and low sales contribution for exit.

Syngenta Quits Paraquat Amid Parkinson's Lawsuits

Syngenta, a maker of the pesticide paraquat, announced on Tuesday, March 4, 2025, that it will discontinue production of the controversial weed killer by the end of June. This decision comes as the company faces thousands of lawsuits in the US. Plaintiffs allege that exposure to Syngenta's paraquat products contributed to their development of Parkinson's disease.

Citing "significant competition" from generic manufacturers and paraquat's "less than 1 percent" contribution to its global sales, Syngenta stated the move aims to "focus resources where they deliver the greatest value." The company affirmed its stance that paraquat is safe when used according to label instructions and remains an effective weed control method.