New cancer-causing toxin found in recalled blood pressure pills

U.S. health regulators said on Friday a third cancer-causingtoxin was found in some blood pressure pills recalled by India's Hetero Labs Ltd a day earlier, adding to a global recall of commonly used drugs to treat hypertension.The U.S. Food and Drug Administration is also looking into whether these types of impurities could be found in other classes of drugs, a spokeswoman for the regulator said.The toxin, N-Nitroso-N-methyl-4-aminobutyric acid (NMBA), identified in 87 lots of Hetero's losartan