Certain blood pressure medications have been recalled by the FDA because they may have been tainted with a cancer-causing chemical.

For the fifth time, Torrent Pharmaceuticals is expanding their recall of widely-used losartan potassium tablets that are sold nationwide. Regulators first moved to pull heart drugs with potentially deadly contaminants from store shelves last year.

This latest recall is due to a potential contaminant, one that also prompted Novartis to halt distribution of generic versions of Zantac last week.

Torrent Pharmaceuticals Limited announced Thursday it is expanding its recall for losartan potassium tablets and losartan potassium/hydrochlorothiazide tablets, after trace amounts of N-Methylnitrosobutyric acid (NMBA) was detected.

Torrent Pharmaceuticals Limited is recalling the following medications:

Losartan Potassium Tablets, USP 50mg, 1000 count

NDC: 13668-409-10
Batch No.: 4DU2E009
Expiration: 12/31/2020

Losartan Potassium Tablets, USP 100mg, 90 count

NDC: 13668-115-90
Batch No.: 4DU3E009
Expiration: 12/31/2020

Losartan Potassium Tablets, USP 100mg, 1000 count

NDC: 13668-115-10
Batch No.: 4DU3D018
Expiration: 02/28/2021

Losartan Potassium / Hydrochlorothiazide Tablets, USP 50mg/12.5mg, 90 count

NDC: 13668-116-90
Batch No.: BEF7D051
Expiration: 11/30/2020

Losartan Potassium / Hydrochlorothiazide Tablets, USP 100mg/25mg, 90 count

NDC: 13668-118-90
Batch No.: 4P04D007
Expiration: 07/31/2020

Anyone with questions can contact Torrent Pharmaceuticals Limited at (800) 912-9561.

You can learn more at the American Heart Association website.