The US recall includes the the versions of valsartan that are made by Major Pharmaceuticals, Solco Healthcare and Teva Pharmaceuticals Industries Ltd.as well as valsartan/hydrochlorothiazide (HCTZ) sold by Solco Healthcare and Teva Pharmaceuticals Industries Ltd.
The U.S. Food and Drug Administration also took action to recall affected valsartan-containing medicines on Friday.
As valsartan is used to treat various cardiovascular conditions including heart failure and hypertension, patients should continue to take their medications until they have a replacement product.
He advised patients not to stop taking valsartan drugs without the doctor's permission, warning that going off medication without supervision could be unsafe.
The class-action request accuses five Canadian pharmaceutical companies that manufactured drugs containing valsartan of negligent behaviour.
Not all valsartan-containing medicines distributed in the United States have valsartan active pharmaceutical ingredient supplied by this specific company.
The FDA said not all products containing valsartan were being recalled in the United States. The FDA noted not all products containing valsartan are contaminated and being recalled.
Patients are advised to look at the company and the drug name mentioned on the label of their prescription to see whether the specific product is recalled or not. Also, the FDA said there is a link between valsartan and cancer. The department added that it is in continuous contact with World Health Organization, institutions and other health organization for medicines and pharmaceuticals.
At the time of the announced recall, Teva had not received any reports of adverse events related to the recall of 29 single lots and 51 combinations lots of valsartan.
The FDA has said it will "continue to investigate this issue and provide additional information when it becomes available".
The official said the recall orders would apply to both locally-manufactured and imported medicines.
The FDA previously reported that imported medications and their ingredients may not have been evaluated for safety and effectiveness in the US, even if they were legal in foreign countries.
The FDA, an agency within the U.S. Department of Health and Human Services, protects the public health by assuring the safety, effectiveness, and security of human and veterinary drugs, vaccines and other biological products for human use, and medical devices.
Valsartan Teva Pharmaceuticals Industries Ltd.