bettylou - here's two links from several indicating that heart 'irritation' and arrhythmia can be a side effect of Zpak...
When the function of normal, healthy intestinal bacteria is disrupted or destroyed, it often is necessary after the antibiotic treatment to begin a restorative process putting back the "good" or functional microbes that serve to keep us healthy.
Safety Announcement
[3-12-2013] The U.S. Food and Drug Administration (FDA) is warning the public that azithromycin (Zithromax or Zmax) can cause abnormal changes in the electrical activity of the heart that may lead to a potentially fatal irregular heart rhythm. Patients at particular risk for developing this condition include those with known risk factors such as existing QT interval prolongation, low blood levels of potassium or magnesium, a slower than normal heart rate, or use of certain drugs used to treat abnormal heart rhythms, or arrhythmias. This communication is a result of our review of a study by medical researchers as well as another study by a manufacturer of the drug that assessed the potential for azithromycin to cause abnormal changes in the electrical activity of the heart.
[
www.drugwatch.com]
[
www.mayoclinic.org]
Jackie
