Antibiotics

FDA Adds Heart Risk Warning to Pfizer Antibiotic

The agency is adding new warnings to the label of Zithromax, an antibiotic used to treat infections such as bronchitis and pneumonia.

The Food and Drug Administration is warning doctors and patients that a widely used antibiotic from Pfizer can cause rare but deadly heart rhythms in some patients.

The agency is adding new warnings to the label of Zithromax, which is commonly used to treat bronchitis, pneumonia and other infections.

Doctors should consider prescribing other antibiotics to patients at risk of heart problems, including those with irregular heartbeats or low levels of potassium or magnesium in their blood.

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