Medreef-550 is a higher-strength formulation containing Rifaximin (550 mg), a specialized antibiotic that acts primarily within the gastrointestinal tract. This medication is most commonly prescribed to reduce the risk of recurring hepatic encephalopathy in adults with liver disease and to treat irritable bowel syndrome with diarrhea (IBS-D). By targeting and inhibiting the growth of harmful bacteria in the gut, it helps manage symptoms like bloating and chronic diarrhea. It is essential to take this prescription medicine exactly as directed by your healthcare provider and to complete the full course to ensure its effectiveness.