If the side effects seem life threatening or you think you’re having a medical emergency ... However, there’s a serious form of diarrhea that can happen with antibiotics, including cephalexin.

Adverse effects are the unintended outcomes, caused by a medical intervention, that have a negative impact on an individual's health or well-being. Common adverse effects include nausea ...

Antibiotics can have adverse ... antibiotic's effects either by neutralizing the antibiotic or protecting the bacteria itself," Dass says. This is something the CDC describes as the "greatest ...