POSTED: Tuesday, March 12, 2013 - 5:00pm
UPDATED: Tuesday, March 12, 2013 - 5:04pm
United States (NBC33) — The Food and Drug Administration has issued a new warning about one of the most popular antibiotics in the United States.
FDA experts say Azithromycin, more commonly known as the Z-Pak, can cause a potentially fatal irregular heart beat in certain patients.
Studies show the drug can alter the electrical activity of the heart, which may lead to a condition in which the timing of the heart's contractions becomes irregular. These conditions can result in death.
The Z-Pak is commonly used to treat sinus infections and bronchitis.