FDA finds contamination in several brands of diabetes drug

U.S. health regulators are telling five drugmakers to recall their versions of a widely used diabetes medication after laboratory tests found elevated levels of a contaminant linked to cancer. The Food and Drug Administration said late Thursday that several batches of the drug metformin tested positive for unsafe levels of…

Cancer drug resistance study raises immune red flags

Sooner or later, most cancer patients develop resistance to the very chemotherapy drugs designed to kill their cancer, forcing oncologists to seek alternatives. Even more problematic, once a patient’s tumor is resistant to one type of chemotherapy, it is much more likely to be resistant to other chemotherapies as well,…