@CNN: The US Food and Drug Administration issued a warning letter to the Chinese maker of an ingredient in popular heart drugs and said it continues to test the ingredient for cancer-causing chemicals https://t.co/awVJ26eAZd https://t.co/jDF00ywErb

@CNN: The US Food and Drug Administration issued a warning letter to the Chinese maker of an ingredient in popular heart drugs and said it continues to test the ingredient for cancer-causing chemicals https://t.co/awVJ26eAZd https://t.co/jDF00ywErb