Posts Tagged 'Pfizer'

FDA warns of possible heart problems from Zithromax (Z-Pack)

The U.S. Food and Drug Administration has issued a warning that the antibiotic azithromycin, sold as Zithromax or “Z-Pack”, may cause a potentially fatal irregular heart rhythm in some patients, Reuters reports.

According to the report, the FDA has said that Zithromax can cause abnormal changes in the electrical activity of the heart. And that, in turn, can lead to a potentially fatal heart rhythm called a prolonged QT interval, in ...

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FDA warns Lipitor and other statins may cause diabetes

The U.S. Food and Drug Administration recently added warnings to the labels of widely used cholesterol drugs called statins, which include Pfizer Inc.’s Lipitor. The new labels warn that the drugs may raise blood sugar levels, could cause memory loss, and may increase the risk of Type II diabetes.

According to a Reuters story, researchers with the University of Massachusetts Medical School in Worchester drew data from the Women’s Health Initiative, which included more than 150,000 diabetes-free women in their 50s, ...

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Anti-smoking drug Chantix linked to heart attacks, strokes

An analysis of clinical trials found the anti-smoking drug Chantix, manufactured by Pfizer Inc., produced a higher rate of heart attacks and strokes in patients who used the treatment compared to those who didn’t.

An FDA warning says it’s “more likely that (the increased risk) is related to the drug and not purely a chance finding.”

Of 4,190 Chantix users, Bloomberg reports, 13 were found to have experienced a major cardiovascular event ...

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