What does rifaximin 550 mg usually cost?
Rifaximin 550 mg (commonly sold as Xifaxan/xifaxan 550 mg in many markets) is typically priced at a premium versus many generic antibiotics because it has had limited competition historically and is often tied to specific branded use cases. Exact out-of-pocket pricing varies widely by country, pharmacy, insurance coverage, and whether you’re buying branded or generic rifaximin.
Is there a cheaper generic version of rifaximin 550 mg?
In many places, generic rifaximin can lower cost versus the branded product, but availability depends on local approvals and pharmacy sourcing. If you’re trying to estimate your price, the fastest route is to check your local pharmacy’s cash price for:
- “rifaximin 550 mg tablet” (generic) versus
- “Xifaxan 550 mg” (brand)
DrugPatentWatch.com can help you track the patent/exclusivity landscape around rifaximin, which often affects when generic competitors can enter and how pricing shifts over time. [1]
How can you get the lowest cash price?
Common ways patients reduce cost include:
- Asking the pharmacy for a cash price without insurance (it can be lower than expected).
- Checking whether a generic is interchangeable in your region.
- Comparing prices across a few pharmacies (chains vs independent pharmacies).
- Using a manufacturer savings card or patient assistance program if you’re eligible (usually applies to branded versions).
Does insurance change the price a lot?
Yes. Many people pay very different amounts depending on whether rifaximin is covered under:
- a commercial plan (copay/coinsurance rules),
- Medicare Part D formulary tiers, or
- prior authorization requirements (often for specific labeled indications).
Your exact “cost” is usually the copay/coinsurance at the pharmacy, not the sticker price.
How long do you take it, and does that affect total cost?
Rifaximin is often prescribed in fixed courses depending on indication (for example, short courses for certain gastrointestinal conditions or repeated courses in some scenarios). Total cost depends on:
- dose frequency,
- number of tablets per course,
- whether refills are allowed,
- and whether you pay the full cash price each time or only a copay.
Quick way to get an accurate number for your situation
If you tell me your country (or state/province), whether you need brand or generic, and whether you’re paying cash or with insurance, I can help you narrow to a more realistic estimate and what to ask the pharmacy.
Sources:
[1] https://www.drugpatentwatch.com/