The U.S. Food and Drug Administration (FDA) issued a nationwide recall of thousands of bottles of blood-pressure medication last week after discovering cross-contamination with another drug.

Federal regulators issued the warning on Dec. 1 for roughly 11,100 bottles of the combination medication bisoprolol fumarate and hydrochlorothiazide, sold under the brand name Ziac.

Testing revealed that "trace amounts of ezetimibe," a prescription drug used to treat high cholesterol, were detected in reserve samples. 

The recall was classified as Class III, indicating that use of or exposure to the contaminated product is "not likely to cause adverse health consequences," according to the agency.