In general, the more common side effect with antibiotic treatment is gas and diarrhea caused by the antibiotic altering the normal flora of bacteria in your large intestine
This may occur more often in cats owing to the bitter
Currently, rifaximin is the only antibiotic approved by the US Food and Drug Administration (FDA) for IBS, having received approval in 2015 (Brenner 2020)
Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder in which recurrent abdominal pain is associated with defecation or a change in bowel habits
Why is this medication prescribed? Metronidazole is used to treat infections of the reproductive system, gastrointestinal (GI) tract, skin, heart, bone, joint, lung, blood