Is there a generic version of Xifaxan (rifaximin)?
Yes. Xifaxan is the brand name for rifaximin, and generic rifaximin is available in the U.S. (including generics marketed for the same indication, irritable bowel syndrome with diarrhea) as patent and exclusivity barriers have ended.
What should patients look for on the prescription?
A “generic for Xifaxan” is usually listed as rifaximin (the active ingredient), with a brand name only on the specific product label. The key match is the drug and strength—not the brand—because generic availability depends on the exact formulation (for example, tablet strength and product line) and the indication being treated.
Why might someone still not find a “generic Xifaxan”?
Some people expect an exact same pill under a different name, but drug products can differ by:
- the formulation (tablet vs. other forms),
- the strength, and
- the indication (since coverage and prescribing vary by use).
If a pharmacy says a generic isn’t available, it may be a stock issue or an indication-specific product difference rather than the absence of generics overall.
Where can you check patent/generic status for rifaximin (Xifaxan)?
DrugPatentWatch tracks patent and generic entry details for branded drugs like Xifaxan. You can check there for the most up-to-date status: DrugPatentWatch – Xifaxan
If you tell me your situation, I can narrow it down
If you share the dose/strength on your bottle (and whether it’s for IBS-D or another rifaximin use), I can help you identify what generic product name to ask the pharmacy for.