Can Metformin cause Breast Cancer?

The commonly prescribed Type 2 diabetes drug metformin was recalled on May 28, 2020, by the US Food and Drug Administration (FDA). This action was taken due to testing that showed high levels of the carcinogen N-nitrosodimethylamine (NDMA). All metformin hydrochloride containing drugs are being removed from the market including brand names Riomet, Glumetza, Fortamet, and Glucophage XR.

How is Breast Cancer Linked to Metformin?

Testing revealed significantly increased amounts of NDMA in samples of metformin, with several batches containing more than 10 times the FDA allowable limit. NDMA was formerly used in the production of plastics and rocket fuel but is no longer produced or commercially available. The only exception is NDMA’s use in lab research to induce tumor growth in test animals.

Unacceptable NDMA levels were recently found in Zantac (ranitidine) drugs, which led to their recall. FDA investigations revealed that NDMA can be formed due to incorrect manufacturing, packaging, and storing conditions, as well as the drug’s chemical structure. There has also been research demonstrating that it can be created in the body after ingested.

Some studies have reported that metformin can actually reduce breast cancer incidence in those with Type 2 diabetes, and additional trials are being performed to better understand that conclusion and to determine the degree of its validity. Though the medication itself may possibly reduce breast cancer risk, NDMA has a known negative impact. In fact, one of the first lawsuits against Zantac for its NDMA contamination was filed by a man diagnosed with breast cancer.

Many forms of breast cancer can be treatable, particularly when found early. It is important to test yourself often, and get mammograms when needed, especially if you may have been exposed to NDMA.


How Can We Help You?

Diabetes patients have been controlling their blood sugar using metformin for many years since its approval in 1994. Those with diabetes who have been diagnosed with breast cancer deserve justice. At Kwartler Manus, LLC our experienced attorneys can help you get the compensation you’re entitled to.

If you or someone you love were diagnosed with breast cancer after taking metformin, you may be eligible for a lawsuit. Other cancer diagnoses that may be eligible include:

  • Bladder cancer
  • Colon Cancer

  • Esophageal cancer

  • Intestinal cancer (both large and small intestine)

  • Kidney cancer

  • Leukemia

  • Liver cancer

  • Lung cancer (for non-smokers)

  • Multiple myeloma

  • Non-Hodgkin’s lymphoma

  • Ovarian cancer

  • Pancreatic cancer

  • Prostate cancer

  • Stomach cancer

  • Testicular cancer

  • Thyroid cancer

  • Uterine cancer

If you have been diagnosed with breast cancer or another cancer listed above after taking a metformin hydrochloride drug, contact us today. The accomplished team here at Kwartler Manus, LLC is dedicated to representing those who have been wronged by these pharmaceutical companies’ mistakes. Contact us online or by phone at (267) 214-8608 now to pursue justice and schedule a consultation.

Put Us On Your Side

  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please make a selection.
  • Please enter a message.