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Rifaximin

Generic Name
Rifaximin
Brand Names
Xifaxan, Zaxine
Drug Type
Small Molecule
Chemical Formula
C43H51N3O11
CAS Number
80621-81-4
Unique Ingredient Identifier
L36O5T016N

Overview

Rifaximin is a semisynthetic, rifamycin-based non-systemic antibiotic, meaning that the drug will not pass the gastrointestinal wall into the circulation as is common for other types of orally administered antibiotics. It has multiple indications and is used in treatment of traveller's diarrhea caused by E. coli; reduction in risk of overt hepatic encephalopathy recurrence; as well as diarrhea-predominant irritable bowel syndrome (IBS-D) in adult women and men. It is marketed under the brand name Xifaxan by Salix Pharmaceuticals.

Background

Rifaximin is a semisynthetic, rifamycin-based non-systemic antibiotic, meaning that the drug will not pass the gastrointestinal wall into the circulation as is common for other types of orally administered antibiotics. It has multiple indications and is used in treatment of traveller's diarrhea caused by E. coli; reduction in risk of overt hepatic encephalopathy recurrence; as well as diarrhea-predominant irritable bowel syndrome (IBS-D) in adult women and men. It is marketed under the brand name Xifaxan by Salix Pharmaceuticals.

Indication

Rifaximin has multiple indications by the FDA: for the treatment of patients (≥12 years of age) with traveller's diarrhea caused by noninvasive strains of Escherichia coli; for the reduction of overt hepatic encephalopathy recurrence in patients ≥18 years of age; and in May 2015 it was approved for irritable bowel syndrome with diarrhea (IBS-D) treatment in adult men and women.

Associated Conditions

  • Bacterial Infections
  • Clostridium difficile infection recurrence
  • Hepatic Encephalopathy (HE)
  • Irritable Bowel Syndrome (IBS)
  • Traveler's Diarrhea

FDA Approved Products

XIFAXAN
Manufacturer:A-S Medication Solutions
Route:ORAL
Strength:200 mg in 1 1
Approved: 2022/09/26
NDC:50090-2445
XIFAXAN
Manufacturer:Carilion Materials Management
Route:ORAL
Strength:200 mg in 1 1
Approved: 2015/11/01
NDC:68151-4980
XIFAXAN
Manufacturer:Physicians Total Care, Inc.
Route:ORAL
Strength:200 mg in 1 1
Approved: 2011/12/28
NDC:54868-5972
XIFAXAN
Manufacturer:Salix Pharmaceuticals, Inc.
Route:ORAL
Strength:200 mg in 1 1
Approved: 2023/11/15
NDC:65649-301
XIFAXAN
Manufacturer:Cardinal Health 107, LLC
Route:ORAL
Strength:550 mg in 1 1
Approved: 2017/03/13
NDC:55154-6777

Singapore Approved Products

XIFAXAN Film-coated Tablet 550mg
Manufacturer:Alfasigma S.p.A.
Form:TABLET, FILM COATED
Strength:550mg
Online:Yes
Approved: 2015/03/23
Approval:SIN14761P

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