What is a common side effect of antibiotics?

Diarrhea is a common side effect of antibiotics largely due to the way these medications affect the balance of bacteria in the gut. Antibiotics are designed to kill bacteria, which can lead to a disruption in the normal gut flora. While they target harmful bacteria responsible for infections, they can also diminish the populations of beneficial bacteria, resulting in gastrointestinal disturbances. This imbalance can lead to diarrhea as the gut reacts to the altered microbiome and the irritation that can occur from the antibiotic itself.

Many patients experience this issue, making it a well-documented side effect of antibiotic treatment. Understanding this effect is crucial for both patients and healthcare providers, as it highlights the importance of monitoring patients on antibiotics and, in some cases, implementing strategies to mitigate this side effect, such as the potential use of probiotics.