Dificid, DIFICID
- Manufacturer
- Merck
- ICD-10 indication
- A04.7
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About Dificid, DIFICID
What is this medication? Dificid, also known by the generic name fidaxomicin, is a prescription antibiotic medication primarily used to treat infections caused by the bacterium Clostridioides difficile. This condition, often referred to as C. diff, is a serious intestinal infection that can cause severe diarrhea and inflammation of the colon. Unlike many other antibiotics that are absorbed into the bloodstream to treat systemic issues, Dificid stays mostly within the gastrointestinal tract to target the bacteria directly where they are causing the problem.
This medication belongs to a class of drugs called macrolide antibiotics and works by inhibiting the production of essential proteins in the bacteria, eventually leading to their death. It is typically prescribed to adults and children who have been diagnosed with C. diff-associated diarrhea. Patients are advised to take the full course of the medication as prescribed by their healthcare provider, even if symptoms improve quickly, to ensure the infection is completely cleared and to help prevent it from returning or becoming resistant to treatment.
Copay & patient assistance
- Patient Copay Amount: $0 (Product provided free of charge to eligible individuals)
- Maximum Annual Benefit Limit: Not Publicly Available (Eligible individuals may receive up to 1 year of product free of charge)
- Core Eligibility Restrictions: Must be a U.S. resident; must not have insurance or other coverage for the prescription (including private insurance, Medicaid, or Medicare); must meet household income limits (e.g., $63,840 or less for individuals, $132,000 or less for a family of 4); must have a prescription from a licensed U.S. healthcare provider; may not participate in an alternative funding program that requires application to the Merck Patient Assistance Program as a condition for coverage.
- RxBIN, PCN, and Group numbers: Not Publicly Available
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Prior authorization & coverage
| Payer | PA | Step therapy | Copay tier |
|---|---|---|---|
— Medicare Part D | — | — | — |
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How this page is sourced
- Drug identity verified against openFDA NDC Directory.
- Label text (when shown) originates from NLM DailyMed.
- Copay and assistance URLs verified periodically; if you hit a broken link, tell us.