americans may not be aware of. first, nearly half of all drugs that americans take are imported from overseas according to an independent study for congress, and many of the drugs are increasingly coming in from china where the plants there are rarely if ever inspected. reporter: every time you pop a pill for a headache, there is a good chance that the key ingredients came from china. 61% of all ibuprofen sold in the u.s. and 94% of the tetracycline used in most antibiotics in the united states are made in china according to a recent report by an independent congressional commission. their regulatory authorities are rife with corruption. the production at local provinces, they are gauged on how well their economy does, and not how safe the products are that they supply to us. reporter: in 2008, 81 americans were killed after being given a tainted blood thinning medicine called heparin that came from china. collene says that her husband was one of them.