Mealey's ( February 14, 2023, 4:06 PM EST) -- NEWARK, N.J. — A New Jersey federal judge overseeing consolidated litigation alleging that the diabetes drug metformin was contaminated with the probable carcinogen N-nitrosodimethylamine (NDMA) has denied a motion by four pharmacy chains arguing that the plaintiffs’ claims are preempted by the Drug Supply Chain Security Act....