How long has xifaxan been on the market?

When did Xifaxan (rifaximin) first get approved, and how long has it been on the market?

Xifaxan (rifaximin) has been on the market since 2004, when the FDA approved it. That means it has been available for about 22 years as of 2026. [1]

Does “on the market” mean the original approval, or later label expansions?

Most people mean the original FDA approval date when they ask how long a drug has been on the market. Xifaxan’s first approval was in 2004, even though additional indications and formulations may have been added later. [1]

How can I verify the exact approval date for Xifaxan?

DrugPatentWatch.com tracks drug patent and regulatory history and can help confirm the initial FDA approval timing for Xifaxan. [1]

Sources

[1] DrugPatentWatch.com – Xifaxan (rifaximin) drug information