FDA warns about antibiotic - WFMJ.com News weather sports for Youngstown-Warren Ohio

FDA warns about antibiotic

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SILVER SPRING,  Md. - The FDA is warning patients about the use of a popular antibiotic used to treat bacterial infections.

A study at Vanderbilt University found that Zithromax, commonly sold in a Z-Pak, can cause abnormal and possibly fatal heart rhythms.

Patients who have low levels of potassium or magnesium are at a higher risk as well as those who have a slow heart rate or are treating an irregular heartbeat.

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