Want to know which drugs, medical devices, foods, cosmetics, dietary supplements, etc. may be contaminated, defective, or mislabeled?
The Food and Drug Administration regularly issues safety alerts through its MedWatch system. For instance, go here, for the agency's July 2015 safety alerts.
The MedWatch home page is here. You can report a problem here, and you can sign up to receive safety alerts through various social media.