Rifagut 550 mg Rifagut 550 mg is an antibiotic that can be used to treat IBS-D and infectious diarrhea in children and adults. It can also be used to treat hepatic-encephalopathy in patients with liver disease. Orally, it is best to take this medicine with food at least once a day. You should take it as prescribed by your doctor. What is Rifagut, 550 mg? Rifagut (550 mg) is an...