Rifaximin Dosage — Strengths, Typical Dose & Max Dose
Complete dosing reference for Rifaximin: available forms and strengths, typical adult dose, titration schedule, max dose, and dosing in special populations.
Verified pharmacies compete for your prescription. Free · No account · Bids in 1–4 hrs.
Chain retail
$1800/mo
GoodRx typical
~$1080/mo
Via Script Unlock
$1350/mo
Save up to 25% — ~$5400/year for chronic use.
Rifaximin Dosing
Rifaximin dosing depends on your indication, kidney and liver function, age, and other medications you are taking. Your prescriber selects the starting dose and titrates based on clinical response.
Ask your prescriber for the Rifaximin package insert or the FDA-approved prescribing information for full dosing detail.
Rifaximin pricing varies dramatically by pharmacy
The same Rifaximin prescription can cost $1350 at one pharmacy and $1800 at another in the same zip code. Chain pharmacies typically charge the most. Script Unlock lets verified independent and mail-order pharmacies compete for your prescription — the winning bid is usually 25% below chain retail.
- Free — no membership, no account, no credit card upfront
- Bids in 1–4 hours from verified US pharmacies
- Locked-in price — no PBM renegotiation at checkout
- Delivery or local pickup
Related Rifaximin pages
Medical disclaimer: Dosage information on this page is for reference only and is not a substitute for medical advice. Your prescribing doctor determines the appropriate Rifaximin dose for your condition, kidney and liver function, other medications, and clinical response.