In a US clinical trial

The majority of IBS-D patients had an abnormal composition of bacteria in the gut1

What is gut dysbiosis?

Alterations in specific bacterial groups and microbial community diversity are known as gut dysbiosis.2 It is an imbalance in the ratio of harmful and helpful bacterial groups.2

The role of gut dysbiosis in IBS-D

Gut dysbiosis, or bacterial imbalance, has been linked to the symptoms of IBS-D that your patients may experience.3-5 Many studies have reported differences in the quality, quantity, and temporal stability of gut bacteria in patients with IBS-D compared to healthy individuals.2,6-11

Studies show that many patients with IBS-D have a bacterial imbalance in the gut2,3,6

The future

As the body of evidence continues to grow in support of the link between gut dysbiosis and IBS-D, so too does the need for compatible pharmacologic therapies.

Find information on IBS-D diagnosis

Additional studies are needed to further clarify the role of gut microbiota in IBS.

See how XIFAXAN is
believed to work

See the science
 

Make a symptom-based diagnosis of IBS-D with confidence12,13

Find Rome IV criteria
 
INDICATIONS

XIFAXAN® (rifaximin) 550 mg tablets are indicated for the reduction in risk of overt hepatic encephalopathy (HE) recurrence in adults and for the treatment of irritable bowel syndrome with diarrhea (IBS-D) in adults.

IMPORTANT SAFETY INFORMATION
  • XIFAXAN is contraindicated in patients with a hypersensitivity to rifaximin, rifamycin antimicrobial agents, or any of the components in XIFAXAN. Hypersensitivity reactions have included exfoliative dermatitis, angioneurotic edema, and anaphylaxis.
  • Clostridium difficile-associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including XIFAXAN, and may range in severity from mild diarrhea to fatal colitis. If CDAD is suspected or confirmed, ongoing antibiotic use not directed against C. difficile may need to be discontinued.
  • There is an increased systemic exposure in patients with severe (Child-Pugh Class C) hepatic impairment. Caution should be exercised when administering XIFAXAN to these patients.
  • Caution should be exercised when concomitant use of XIFAXAN and P-glycoprotein (P-gp) and/or OATPs inhibitors is needed. Concomitant administration of cyclosporine, an inhibitor of P-gp and OATPs, significantly increased the systemic exposure of rifaximin. In patients with hepatic impairment, a potential additive effect of reduced metabolism and concomitant P-gp inhibitors may further increase the systemic exposure to rifaximin.
  • In clinical studies, the most common adverse reactions for XIFAXAN were:
    • –HE (≥10%): Peripheral edema (15%), nausea (14%), dizziness (13%), fatigue (12%), and ascites (11%)
    • –IBS-D (≥2%): Nausea (3%), ALT increased (2%)
  • INR changes have been reported in patients receiving rifaximin and warfarin concomitantly. Monitor INR and prothrombin time. Dose adjustment of warfarin may be required.
  • XIFAXAN may cause fetal harm. Advise pregnant women of the potential risk to a fetus.

To report SUSPECTED ADVERSE REACTIONS, contact Salix Pharmaceuticals at 1-800-321-4576 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

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INDICATIONS

XIFAXAN® (rifaximin) 550 mg tablets are indicated for the reduction in risk of overt hepatic encephalopathy (HE) recurrence in adults and for the treatment of irritable bowel syndrome with diarrhea (IBS-D) in adults.

IMPORTANT SAFETY INFORMATION
  • XIFAXAN is contraindicated in patients with a hypersensitivity to rifaximin, rifamycin antimicrobial agents, or any of the components in XIFAXAN. Hypersensitivity reactions have included exfoliative dermatitis, angioneurotic edema, and anaphylaxis.