Rifaxa Tab 550mg is a medication containing the active ingredient rifaximin, an antibiotic primarily used to treat gastrointestinal conditions. It is effective against a wide range of bacteria within the gut without significantly impacting the body’s natural system. This drug is commonly prescribed for treating traveler’s diarrhea, irritable bowel syndrome with diarrhea (IBS-D), and hepatic encephalopathy to reduce the risk of recurrence. This tablet works by preventing bacterial replication. Each tablet is film-coated for ease of ingestion. It's important to follow the prescribed dosage for optimal effectiveness and minimize potential side effects.