July 16, 2020 — A class action lawsuit was filed by a man who bought metformin diabetes drugs from Express Scripts and later found out they may have been tainted with a carcinogenic chemical called NDMA.
The lawsuit was filed by Masao H., a man from California who bought several types of metformin from Express Scripts between June 2013 and December 2019.
He was not diagnosed with cancer, but he said he would not have bought the medications if he knew they contained NDMA.
NDMA (N-nitroso dimethylamine) is listed as a “probable human carcinogen” by the U.S. Environmental Protection Agency (EPA).
Earlier this year, the online pharmacy Valisure reported finding high levels of NDMA in Metformin ER products manufactured by Amneal Pharmaceuticals.
Valisure’s tests detected NDMA contamination levels between 235 and 450 ng/tablet, with levels reaching up to 16.5x the FDA’s daily limit.
The class action lawsuit is seeking to represent people in the U.S. who bought generic metformin products after January 1, 1995 that were manufactured by Amneal Pharmaceuticals or AvKare Inc.
The Metformin Lawsuit (PDF) was filed on June 25, 2020 in the U.S. District Court for the Eastern District of California — Case No. 2:20-cv-08713.
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