What is rifaximin?
Rifaximin is an antibiotic that works in the gut. It is used to treat certain gastrointestinal conditions caused or worsened by bacterial activity, because it stays largely within the intestines rather than circulating throughout the whole body.
What is rifaximin used for?
Rifaximin is most commonly associated with treatments for:
- Hepatic encephalopathy (episodes of confusion or altered mental status in people with serious liver disease), where gut bacteria can contribute to symptoms.
- Traveler’s diarrhea and some other diarrheal illnesses, depending on the specific approved product and dosing.
How does rifaximin work?
Rifaximin belongs to the rifamycin class of antibiotics. It inhibits bacterial RNA production, which stops bacteria from growing. Because of its poor absorption through the intestine, the drug’s activity is focused on the gastrointestinal tract.
Is rifaximin absorbed into the bloodstream?
Rifaximin is designed to have low systemic absorption. That means it mainly acts locally in the intestines, which can reduce whole-body exposure compared with antibiotics that are absorbed more extensively.
What are common side effects?
Side effects vary by the condition being treated and the dose, but gastrointestinal complaints (such as nausea, abdominal discomfort, or diarrhea) are among the more commonly reported effects. Serious allergic reactions are rare with antibiotics but can occur.
How is it taken?
Rifaximin is given by mouth in tablet or similar oral formulations. The dosing schedule depends on the specific indication and the product prescribed.
Sources
No external sources were provided with the question.