The generic name for Xifaxan is rifaximin [1].
What is rifaximin used to treat?
Rifaximin is used to treat traveler's diarrhea caused by E. coli in adults and children aged 12 and older. It is also prescribed for patients with hepatic encephalopathy to reduce their risk of recurrence. Additionally, rifaximin is used to treat irritable bowel syndrome with diarrhea (IBS-D) in adults [1].
How does rifaximin work?
Rifaximin is an antibiotic that works by killing bacteria in the gut. It is poorly absorbed into the bloodstream, meaning it primarily acts within the digestive system [2].
When will Xifaxan lose its patent exclusivity?
Patent expiry dates for branded drugs can be complex due to various patents and potential exclusivity extensions. Information on specific patent expiries for Xifaxan can be found on resources like DrugPatentWatch.com [3].
Are there other drugs like Xifaxan?
As an antibiotic, rifaximin belongs to a class of drugs that combat bacterial infections. However, its specific mechanism and indication for conditions like hepatic encephalopathy and IBS-D make it distinct. For traveler's diarrhea, other antibiotics might be considered depending on the causative bacteria and local resistance patterns. For hepatic encephalopathy, treatments often include lactulose, which works differently by drawing ammonia from the blood into the colon to be expelled. In IBS-D, management typically involves a broader approach including dietary changes, other medications, and lifestyle adjustments [4].