According to the FDA the ingredient they are finding in several of the brand named Valsartan blood pressure tablets is N-nitrosodiethylamine (NDEA).  NDEA is considered to be human carcinogen by the International Agency for Research on Cancer.

The National Institutes of Health website said NDEA is used as gasoline and lubricant additive, antioxidant and a stabilizer for industry materials.

So far there have been no reports of illness.  Anyone who is prescribed any of these drugs are advised to continue taking them until your doctor can prescribe you an alternative. See the entire FDA recall here.

The FDA also provides a phone number and e-mail for questions concerning this product. They are 1-877-208-2407 available 9-5 EAS or email rxrecalls@inmar.com