Not available outside of the UK & Ireland.

Application

Rifaximin is a semisynthetic analog of rifamycin with poor absorptivity. It selectively inhibits (E. coli, B subtilis) bacterial DNA-dependent RNA polymerase by a mechanism similar to rifabutin, β subunit binding. It is effective against aerobic and anaerobic Gram-positive and Gram-negative bacteria. It is active against species of Staphylococcus, Streptococcus and Enterococcus. It is less active against species of Enterobacteriaceae. Rifaximin is a non-systemic, gastrointestinal site-specific antibiotic. It has a pyridoimidazole ring, making it non-absorbable. Rifaximin is a pregnane X receptor (PXR) activator.

Biochem/physiol Actions

Rifaximin is a semisynthetic antibiotic used to treat diarrhea caused by E. coli. It is also used to treat hepatic encephalopathy by reducing blood ammonia concentrations. Rifaximin is a potential treatment for inflammatory bowel disease.

General description

Chemical structure: macrolide

Other Notes

Keep container tightly closed in a dry and well-ventilated place.

Packaging

1, 5 g in poly bottle

Preparation Note

Practically insoluble in water, soluble in acetone and methanol.