Rifagut 400 MG Tablet is an antibiotic used to treat bacterial infections. The lower dose (200mg, 400mg) is used to treat traveller's diarrhoea (an intestinal infection that occurs as a result of eating contaminated food or drinking contaminated water while travelling) caused due to E. coli bacteria. The higher dose (550mg) is used to treat hepatic encephalopathy (a decline in brain function that occurs due to the build-up of toxins in the blood as a result of severe liver disease) and ... Rifagut Tablet is primarily used to manage infectious diarrhoea. This medicine belongs to the class of antibiotics, specifically designed to combat bacterial infections in your system. Learn about Rifagut uses, dosage, side effects, food interactions, and more. Get all the details about Rifagut from MedicinesFAQ. Rifagut Tablet 200 mg is a non-aminoglycoside semi-synthetic antibacterial derived from rifamycin SV. It inhibits bacterial RNA synthesis by binding to the bacterial DNA-dependent RNA polymerase and has antibacterial activity against Escherichia coli (E. coli).