Rifaxigyl-M Tablet is an antibiotic combination used to treat bacterial and gastrointestinal infections (including traveller's diarrhoea and irritable bowel syndrome). Gastrointestinal infections are conditions caused by harmful microorganisms, such as bacteria, viruses, or parasites, that affect the digestive system. They often lead to symptoms like nausea, vomiting, diarrhoea, and abdominal pain.