Wednesday, July 8, 2026

Drug profile · INN

rifaximin

rifaximin (XIFAXAN) is a bacterial dna-directed rna polymerase inhibitor. Associated with Norgine Pty.. Route of administration: oral. Current US regulatory status: approved.

FDA: approved TGA: approved NMPA: clinical trials
US status approved
Patents linked 1
Pipeline programs 13
News articles 0
Drug details — rifaximin
US status
approved
Class
Route
ORAL
Patents
1
Programs
13
Data quality
0.84

Quick answer

rifaximin (XIFAXAN) is a bacterial dna-directed rna polymerase inhibitor. Associated with Norgine Pty.. Route of administration: oral. Current US regulatory status: approved.

Key facts

INN rifaximin
Brand XIFAXAN
Mechanism Bacterial DNA-directed RNA polymerase inhibitor
Target Bacterial DNA-directed RNA polymerase
Route ORAL
Formulation TABLET
Originator Norgine Pty.

Mechanism of action

Bacterial DNA-directed RNA polymerase inhibitor

Primary target: Bacterial DNA-directed RNA polymerase

Approval history

Authority Status Date
FDA approved
TGA approved
NMPA clinical trials

Pipeline programs

  1. Rifaximin Phase 3 · Hospital Authority · Decompensated Cirrhosis
  2. Rifaximin Phase 3 · First People's Hospital · Crohn Disease
  3. Vedolizumab-3041 Phase 3 · Takeda · Active Chronic Pouchitis
  4. Normix compresse rivestite con film for substance use disorder Phase 2 · Telethon Foundation · substance use disorder
  5. Rifaximin Phase 2 · Chinese Academy of · Small Intestine Bacterial Overgrowth
  6. Rifaximin Approved · COLLEGIUM PHARMACEUTICAL · ACS - Acute Coronary Syndrome
  7. Rifaximin Approved · United Therapeutics Europe · Nonalcoholic Fatty Liver Disease
  8. Rifaximin Approved · United Therapeutics Europe · Clostridium Difficile Infection

Related & competitor drugs

  1. rifampin Bacterial DNA-directed RNA polymerase inhibitor
  2. rifabutin Bacterial DNA-directed RNA polymerase inhibitor
  3. rifapentine Bacterial DNA-directed RNA polymerase inhibitor
  4. rifampicin Bacterial DNA-directed RNA polymerase inhibitor
  1. US 2022119410

    PHARMACEUTICAL COMPOSITIONS COMPRISING POLYMORPHIC FORMS ALPHA, BETA, AND GAMMA OF RIFAXIMIN

    Expires Wed Apr 16 2042 00:00:00 GMT+0000 (Coordinated Universal Time)

    granted

Frequently asked questions

What is rifaximin?

rifaximin (XIFAXAN) is a bacterial dna-directed rna polymerase inhibitor. Associated with Norgine Pty.. Route of administration: oral. Current US regulatory status: approved.

What is the brand name for rifaximin?

XIFAXAN is a marketed brand name for rifaximin. Check FDA Drugs@FDA for the current US label holder and prescribing information.

What is the US approval status of rifaximin?

rifaximin has approved status in the United States according to our Drugs@FDA-derived records. Verify on the official FDA label before clinical or commercial decisions.