Rifaximin and Herbal Supplement Interactions

Pharmacological Profile and Safety

• Rifaximin does not induce cytochrome P450 enzymes because it lacks systemic exposure, eliminating the extensive drug interaction profile seen with other rifamycins, according to the American Thoracic Society 1

Clinical Implications and Guidelines

• The American Gastroenterological Association implies that rifaximin can be safely used with herbal supplements for conditions like hepatic encephalopathy, travelers' diarrhea, or SIBO without concern for pharmacokinetic interactions, as suggested by a medical insights report 2
• For hepatic encephalopathy, the European Association for the Study of the Liver recommends that rifaximin should always be combined with lactulose rather than used as monotherapy, regardless of herbal supplement use, as supported by clinical guidelines 3