Keflex® (
cephalexin) is an antibiotic often prescribed for treating bacterial infections and preventing heart valve infections. As with any medication, there are potential risks associated with the use of Keflex.
Many antibiotics, including Keflex, have been known to cause pseudomembranous colitis (severe
diarrhea) in some people. Contact your healthcare provider immediately if you experience severe or watery diarrhea, blood in your stools, stomach pain, or a low-grade fever. Keflex is also known to increase the risk of developing vaginal
yeast infections.
A number of other side effects have been reported during clinical studies. In these studies, the most commonly reported problems that occurred in either adults or children included:
