Rifaximin in 2026: What's Going On With Availability?

If you rely on Rifaximin (brand name Xifaxan) to manage hepatic encephalopathy, IBS-D, or another gastrointestinal condition, you've probably experienced the frustration of showing up at a pharmacy only to be told it's out of stock. In 2026, availability remains inconsistent across the country — and patients are feeling the impact.

This article gives you an up-to-date picture of the Rifaximin supply situation, what's driving the problem, how much it costs right now, and what you can do to keep your treatment on track.

Is Rifaximin Still in Shortage?

As of early 2026, Rifaximin is not officially listed on the FDA's drug shortage database. However, that doesn't mean it's easy to find. Many patients report intermittent stock-outs at retail pharmacies, particularly at large chain stores. The issue isn't a traditional manufacturing shortage — it's a combination of supply constraints and surging demand that creates gaps at the pharmacy level.

The situation has been building since 2023, when off-label prescribing for conditions like SIBO (small intestinal bacterial overgrowth) began increasing significantly alongside growing use for its FDA-approved indications.

For a deeper look at the causes, read: Why Is Rifaximin So Hard to Find?

Why Is Rifaximin Hard to Find?

Several factors converge to make Rifaximin difficult to locate:

• Single-source manufacturing: Xifaxan is made exclusively by Salix Pharmaceuticals (Bausch Health). There is no generic version available in the US, and none is expected until 2029.
• Rising demand: More doctors are prescribing Rifaximin for IBS-D and off-label for SIBO. The number of prescriptions has grown steadily year over year.
• High cost limits pharmacy stock: At $1,800 to $2,400 for a 30-day supply, many pharmacies keep minimal inventory and order on demand rather than stocking shelves.
• Insurance barriers: Prior authorization requirements and step therapy policies create delays that can leave patients without medication for days or weeks.

How Much Does Rifaximin Cost in 2026?

The cash price for Rifaximin remains among the highest for commonly prescribed oral medications:

• Xifaxan 550 mg (60 tablets): Approximately $1,800 to $2,400 without insurance
• Xifaxan 200 mg (9 tablets, travelers' diarrhea course): Approximately $100 to $150 without insurance

With insurance, your out-of-pocket cost depends on your plan's formulary tier. Many patients with commercial insurance pay $50 to $200 per fill after the manufacturer savings card is applied. Without insurance or savings programs, the cost is a major barrier.

For detailed strategies to reduce your cost, see: How to Save Money on Rifaximin in 2026.

Are There New Options Coming?

There are a few developments patients should know about:

• Generic Rifaximin (2029): A patent settlement between Salix and Teva Pharmaceuticals means the earliest a generic could reach the US market is 2029. When generics arrive, prices are expected to drop significantly.
• Alternative treatments: New therapies for IBS-D and hepatic encephalopathy continue to be studied. Talk to your gastroenterologist about whether any newer options might be appropriate for you.
• Biosimilar and off-patent medications: While not directly related to Rifaximin, the broader trend toward more affordable specialty medications may create additional options in the coming years.

In the meantime, patients can explore alternatives to Rifaximin if they can't fill their prescription.

How to Find Rifaximin in Stock Right Now

If you need Rifaximin today, here's a step-by-step approach:

1. Check Medfinder — Search for real-time Rifaximin availability at pharmacies near you.
2. Call independent pharmacies — They often have more flexible ordering and can get Rifaximin within 1-2 business days.
3. Ask about specialty pharmacies — Pharmacies that specialize in GI or liver disease medications are more likely to have Rifaximin on hand.
4. Request early refills — If you take Rifaximin daily, ask your doctor to send refills a few days early so your pharmacy has time to order.
5. Contact Bausch Health — The manufacturer's patient support line can sometimes help locate pharmacies with stock.

For a complete guide, read: How to Find Rifaximin in Stock Near You.

Final Thoughts

The Rifaximin availability situation in 2026 is challenging but not hopeless. While it's not a formal FDA shortage, the practical reality is that many patients struggle to find it at their local pharmacy. The root causes — single-source manufacturing, no generic competition, rising demand, and high costs — aren't going away overnight.

Your best strategy is to plan ahead, use tools like Medfinder, explore savings programs, and maintain an open conversation with your doctor about backup options. Millions of patients depend on Rifaximin, and with the right approach, you can stay on top of your treatment even during supply disruptions.