FDA warns Zithromax can cause fatal irregular heart rhythm<p>The Food and Drug Administration warned on Tuesday that the antibiotic azithromycin, sold as Zithromax, can cause a potentially fatal irregular heart rhythm in some patients</p><img src="http://feeds.feedburner.com/~r/foxnews/health/~4/l7lAZbODdyA" height="1" width="1"/>
Source: FDA warns Zithromax can cause fatal irregular heart rhythm (http://feeds.foxnews.com/~r/foxnews/health/~3/l7lAZbODdyA/)