WASHINGTON - The Food and Drug Administration has expanded the recall of a blood pressure medication sold at Walmart, Sam's Club, and other retail locations.

Torrent Pharmaceuticals Limited is recalling 60 lots of Losartan potassium tablets, and 54 lots of Losartan potassium/ hydrochlorothiazide tablets after trace amounts of an impurity were detected in an active pharmaceutical ingredient manufactured by Hetero Labs Limited.

The impurity detected in the API is N-Methylnitrosobutyric acid. Torrent is only recalling lots of losartan-containing products that contain N-Methylnitrosobutyric acid which is above the acceptable daily intake levels released by the FDA.

Torrent Pharmaceuticals Limited says it has not received any reports of adverse reactions related to the recall.

Losartan is used to treat hypertension, hypertensive patients with Left Ventricular Hypertrophy and for the treatment of nephropathy in Type 2 diabetic patients.

Losartan potassium and hydrochlorothiazide tablets, USP is used to treat hypertension and hypertensive patients with Left Ventricular Hypertrophy.

Patients who are taking Losartan Potassium Tablets, USP and Losartan Potassium/ Hydrochlorothiazide Tablets, USP should continue taking their medication, as the risk of harm to the patient’s health may be higher if the treatment is stopped immediately without any alternative treatment.

Patients should contact their pharmacist or physician who can advise them about an alternative treatment before returning their medication.

The products subject to recall are listed below. The product can be identified by checking the product name, manufacturer details, and batch or lot number on the bottle containing these products.

Losartan Potassium Tablet and Losartan Potassium/ Hydrochlorothiazide Tablet Lots