Scales of Justice

Roundup Lawsuit

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Carr & Carr can help if you or a loved one have used Roundup and have developed Non-Hodgkins B Cell Lymphoma.

Roundup is a weed and grass-killer that has been linked to cancer. Over 4,000 lawsuits accuse Monsanto of failing to warn that glyphosate and other toxic chemicals in Roundup might cause non-Hodgkin’s lymphoma.

The International Agency for Research on Cancer (IARC), a division of the World Health Organization, declared the herbicide Roundup (glyphosate) as a “probable human carcinogen” in March 2015. The warning was based on “convincing evidence” that glyphosate causes cancer in laboratory rats and mice. In humans, there is “limited evidence” linking Roundup and cancer, including non-Hodgkin’s lymphoma and DNA/chromosomal damage. Roundup is primarily associated with Non-Hodgkin Lymphoma, a cancer that starts in the immune system nearly anywhere in the body. It is a blood cancer that grows in lymphocytes, which are white blood cells in the immune system that help the body fight diseases.

Studies have found higher rates of this cancer in farm-workers in Canada, Sweden, and the United States who were exposed to large amounts of Roundup. More than 4,000 people have filed lawsuits over Roundup, most in Missouri and California state courts. About 500 cases have been coordinated in California federal court as a Multi-District Litigation (MDL). The number of lawsuits has grown significantly since April 2016, when a federal judge refused to dismiss a lawsuit, paving the way for more cases to be filed by people who developed non-Hodgkin lymphoma.  The nationwide litigation has been are centralized in Multi-District Litigation (MDL No. 2741) under U.S. District Judge Vince Chhabria in the Northern District of California — In RE: Roundup Products Liability MDL.

What Ingredients are in Roundup?

Roundup contains glyphosate, a chemical that blocks an enzyme plants need to survive. The Label (PDF) and MSDS for Roundup Original indicates that 41% is glyphosate and 59% is “other ingredients” that are not named. Most formulations of Roundup contain a soap-like chemical called POEA that helps glyphosate get into the plant.

How Does Roundup Work?

The active ingredient, glyphosate was commercialized by Monsanto in 1974. It works by specifically inhibiting an enzyme that is essential to plant growth and life. Roundup also contains other chemicals that help glyphosate get into the plant. For example, most formulations of Roundup contain a chemical surfactant called POEA that is known to be toxic to aquatic animals. Monsanto insists that glyphosate alone is harmless. However, the combination of POEA and glyphosate is much more hazardous than glyphosate on its own. 


1985 In 1985, the U.S. Environmental Protection Agency (EPA) warned that glyphosate was a possible human carcinogen. In 1991, the EPA reversed its decision and said there was a lack of “convincing carcinogenicity evidence.

2001 Cancer Epidemiology Biomarkers (November 2001): Canadian study found a dose-response relationship between glyphosate exposure and non-Hodgkin’s lymphoma.

2003 Occupational and Environmental Medicine (September 2003): American study of over 3,400 farmworkers in the Midwest found higher rates of non-Hodgkin’s lymphoma associated with glyphosate exposure.

2015 The International Agency for Research on Cancer (IARC), a division of the World Health Organization, declared the herbicide Roundup (glyphosate) as a “probable human carcinogen” in March 2015.

2016 In January 2016, FDA researchers tested about 10 samples of American honey. All of them tested positive for glyphosate, and some had twice the legal limit of 50 parts per billion (ppb) set in the European Union (EU). The problem is that bees are visiting fields that have been sprayed and carrying Roundup back to their hives.

2016 In October 2016, dozens of Roundup lawsuits were centralized in one federal court in California. As of March 2017, there are approximately 700 lawsuits in St. Louis, Missouri state court.

2018 Effective July 7, 2018; California became the 1st state to require cancer warning labels on Roundup and other glyphosate-based herbicides.

2018 July 11, 2018 — A judge has allowed hundreds of lawsuits to move forward against Monsanto for concealing the potential cancer risk of Roundup weed-killer.

List of Monsanto’s Glyphosate Herbicides:

  • Roundup Ultra®
  • Roundup Pro®
  • Accord®
  • Honcho®
  • Pondmaster®
  • Rascal®
  • Expedite®
  • Ranger®
  • Bronco®
  • Campaign®
  • Landmaster®
  • Fallow Master®

The Oklahoma lawyers at Carr & Carr can help if you or a loved one has been a victim of Roundup and have developed either Non-Hodgkin’s B Cell Lymphoma. Call us at 844-210-7917 or contact us online to schedule your free, no-obligation consultation. Our law firm maintains offices in Tulsa and Oklahoma City, but our attorneys can also meet you at your home, hospital room or other location convenient for you.

Free Consultation (844) 210-7917
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