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Orange Book drug · Brand (NDA)

Dificid

Fidaxomicin

RLDNDA 201699 Cubist Pharms LLC
Approved
May 27, 2011
Strengths
1
Listed patents
8
Applications
2

What does the FDA Orange Book show for Dificid?

Dificid contains Fidaxomicin and appears in 2 FDA Orange Book applications. NDA 201699 is the lead filing, with 1 presentation shown in detail; the other exact-name filings are listed separately. The page preserves strength, dosage form, route, status, RLD/RS, TE, patent, and exclusivity facts. Clinical labeling requires an exact application-matched source.

FDA applications
2; lead NDA 201699

Every filing shown uses the exact FDA product name; the lead filing supplies the detailed presentation view.

Lead application holder
Cubist Pharmaceuticals LLC

The listed applicant holds the FDA application; this field does not establish the product manufacturer.

Product presentations
1

Each FDA product number remains tied to its own strength, dosage form, route, and status.

Marketing categories
Prescription

Orange Book marketing categories do not establish real-time inventory or commercial availability.

Reference roles
RLD / RS

RLD and RS designations are presentation-specific, not inferred from the trade name.

TE codes
AB

Therapeutic-equivalence codes apply only within the matching Orange Book product heading.

Listed patents
8

A zero means none appear in this snapshot, not that no patent rights exist.

Exclusivity records
1

FDA exclusivity and listed patent protection are distinct regulatory concepts.

Sourced from the official FDA Orange Book data file · snapshot refreshed

FDA product-presentation matrix

Every product number in this exact application
Every FDA product presentation under this application, with strength, dosage form and route, marketing status, therapeutic-equivalence code, and reference role.
ProductStrengthDosage form / routeMarketing statusTE codeReference role
001200MGTABLETORALPrescriptionAB
RLDRS

Marketing status, TE code, RLD, and RS are presentation-level fields. Never transfer one product number's designation to another presentation.

Who is responsible for this application?

Application holder is not the same as manufacturer

FDA application holder

Cubist Pharmaceuticals LLC

The Orange Book identifies this organization as the applicant responsible for NDA 201699.

Manufacturer status

Not established by the Orange Book

A product-specific FDA label or NDC source must independently identify a manufacturer, labeler, distributor, packager, repackager, or relabeler. The applicant name is not used as a substitute for that evidence.

Regulatory interpretation

What the record means, and what it does not
FDA marketing status

1 presentation listed as prescription

RX and OTC are Orange Book marketing categories, not real-time inventory signals. Confirm current commercial availability with labeling, the application holder, or an authoritative drug listing.

Therapeutic equivalence

TE code AB across rated presentations

An AB code is an A-rating: FDA considers the product therapeutically equivalent to pharmaceutical equivalents in the same Orange Book heading and equivalence group.

Patent & exclusivity record

8 listed patent expirations and 1 exclusivity date remain on or after Jul 26, 2026

The latest future date recorded across those files is Jan 31, 2028. Patent and FDA exclusivity operate independently, can overlap, and do not by themselves predict a generic launch date.

Same-ingredient landscape

3 other ANDAs and 0 other NDAs found

3 of the related ANDA applications are not marked discontinued. Sharing an ingredient does not establish pharmaceutical or therapeutic equivalence; strength, dosage form, route, and TE group still matter.

Which products are meaningfully comparable?

Exact ingredient + dosage form + route cohorts

NDA 201699 appears in 1 comparison cohort. These groups narrow the same-ingredient landscape, but strength and TE code must still match before interpreting therapeutic equivalence.

Why are clinical sections unavailable?

Exact application-label matching status
Exact source match queuedQueue NDA-201699

No exact application-level FDA or DailyMed label match has been reviewed for this application. Approved uses, dosing, warnings, adverse reactions, and clinical evidence remain unavailable rather than being inherited from a related brand, generic, or ingredient record.

Until an exact application match passes human review, this page intentionally omits approved uses, dosing, warnings, adverse reactions, mechanism, and clinical-study summaries. It never inherits those claims from an RLD, brand, generic, or same-ingredient product.

Product detail

NDA 201699
TE ABRLDRS
Strength
200MG
Dosage form
TABLET
Route
ORAL
Marketing status
Prescription

Key dates

Approval, patents, exclusivity

  1. Approval

    FDA approval date of this drug product.

    15 yr 5 mo ago

  2. Today

  3. Exclusivity ends · ODE-367

    Orphan-drug exclusivity (7 years)

    in 6 mo

  4. Patent 7906489 expires

    Listed method-of-use patent (U-319) expiration.

    in 7 mo

  5. Patent 7906489 expires

    Listed method-of-use patent (U-2741) expiration.

    in 7 mo

  6. Patent 7378508 expires

    Listed drug substance patent expiration.

    in 1 yr

  7. Patent 7863249 expires

    Listed drug substance patent expiration.

    in 1 yr

  8. Patent 8859510 expires

    Listed method-of-use patent (U-319) expiration.

    in 1 yr

  9. Patent 8859510 expires

    Listed method-of-use patent (U-2741) expiration.

    in 1 yr

  10. Patent 7906489*PED expires

    Listed listed patent expiration.

    in 1 yr 2 mo

  11. Patent 7378508*PED expires

    Listed listed patent expiration.

    in 1 yr 6 mo

  12. Patent 7863249*PED expires

    Listed listed patent expiration.

    in 1 yr 6 mo

  13. Patent 8859510*PED expires

    Listed listed patent expiration.

    in 1 yr 6 mo

Patent & exclusivity timeline

Protection horizon
2026202720282029TodayExclusivity ODE-367: 2027-01-24Exclusivity ODE-367Patent 7906489: 2027-03-04Patent 7906489Patent 7906489: 2027-03-04Patent 7906489Patent 7378508: 2027-07-31Patent 7378508Patent 7863249: 2027-07-31Patent 7863249Patent 8859510: 2027-07-31Patent 8859510Patent 8859510: 2027-07-31Patent 8859510Patent 7906489*PED: 2027-09-04Patent 7906489*PEDPatent 7378508*PED: 2028-01-31Patent 7378508*PEDPatent 7863249*PED: 2028-01-31Patent 7863249*PEDPatent 8859510*PED: 2028-01-31Patent 8859510*PED
Patent expiryExclusivity endToday

Pharmaceutical detail

FDA product record

Active ingredient

FIDAXOMICIN

Strength

200MG

Dosage form

TABLET

Route

ORAL

TE code

AB

Application

NDA 201699

Product number

001

Marketing status

Prescription

Reference listed drug (RLD)

Yes

Reference standard (RS)

Yes

Marketing exclusivity

Hatch-Waxman
  • ODE-367Orphan-drug exclusivity (7 years)

    in 6 mo

Listed patents

Orange Book patent file
Patents listed in the FDA Orange Book for this product, with expiration date and patent type.
PatentExpiresInType
7906489in 7 mo
U-319
7906489in 7 mo
U-2741
7378508in 1 yr
SubstanceProduct
7863249in 1 yr
SubstanceProduct
8859510in 1 yr
U-319
8859510in 1 yr
U-2741
7906489*PEDin 1 yr 2 mo
7378508*PEDin 1 yr 6 mo
7863249*PEDin 1 yr 6 mo
8859510*PEDin 1 yr 6 mo

Other FDA applications for Dificid

1 additional filing

The FDA has approved 2 separate applications under this product name. Each row is one application: a distinct applicant and approval for the same drug.

Other FDA applications approved under the product name Dificid, with applicant, approval date, number of strengths, therapeutic-equivalence code, and marketing status.
ApplicationApplicantApprovedStrengthsTE codeStatus
NDA 213138Cubist Pharms LLCJan 24, 20201—Prescription

Active-ingredient family

Brand + generics

This is a reference-listed drug (RLD), the basis for generic (ANDA) applications. Other products sharing this ingredient are listed below.

View full Fidaxomicin family

How to use this record responsibly

Scope, limitations, and primary sources

What to verify before making a decision

  • The applicant is the holder of legal responsibility for the application; the Orange Book does not establish that the applicant manufactured or currently markets every listed product.
  • RX, OTC, and discontinued are FDA listing categories, not real-time pharmacy inventory or commercial-availability data.
  • Therapeutic equivalence applies only within the matching ingredient, dosage form, route, strength, and TE-code group; same ingredient alone is insufficient.
  • Listed patent and exclusivity dates are regulatory intelligence, not legal advice, a freedom-to-operate analysis, or a reliable generic-launch forecast.
  • The Orange Book is not prescribing information and does not provide indications, dosing, contraindications, adverse reactions, recalls, or current safety communications.

Official FDA references

Data shown here is normalized for search and comparison. When a regulatory, substitution, launch, or legal decision turns on a field, verify it against the current FDA record and the relevant source document.

Dificid: frequently asked questions

Approval, therapeutic equivalence, patents, and exclusivity for this drug, from the FDA Orange Book.

Built directly from the FDA Orange Book product, patent, and exclusivity files refreshed Jul 02, 2026, 06:34 PM. Every strength of NDA 201699 is shown on this page. Interpret patents, exclusivity, availability, and therapeutic equivalence using the limitations above.

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