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Orange Book drug · Brand (NDA)

Rytary

Carbidopa; Levodopa

RLDNDA 203312 4 strengths Impax
Approved
Jan 07, 2015
Strengths
4
Listed patents
8

What does the FDA Orange Book show for Rytary?

Rytary contains Carbidopa; Levodopa and is the new drug FDA Orange Book record for NDA 203312. The application has 4 presentations with strength, dosage-form, route, status, RLD/RS, TE, patent, and exclusivity context. Current inventory and clinical labeling are not established without an application-matched source.

FDA application
NDA 203312

New drug application identity from the Orange Book snapshot.

Application holder
Impax Laboratories LLC

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

Product presentations
4

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
None posted

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
0

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
00123.75MG;95MGCAPSULE, EXTENDED RELEASEORALPrescriptionNone posted
RLD
00236.25MG;145MGCAPSULE, EXTENDED RELEASEORALPrescriptionNone posted
RLD
00348.75MG;195MGCAPSULE, EXTENDED RELEASEORALPrescriptionNone posted
RLD
00461.25MG;245MGCAPSULE, EXTENDED RELEASEORALPrescriptionNone posted
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

Impax Laboratories LLC

The Orange Book identifies this organization as the applicant responsible for NDA 203312.

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

4 presentations 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

No TE code is posted for this application

No TE code does not mean FDA found the product ineffective or non-equivalent. FDA generally publishes TE evaluations for multisource prescription products; single-source and some other products may have no code.

Patent & exclusivity record

8 listed patent expirations and 0 exclusivity dates remain on or after Jul 26, 2026

The latest future date recorded across those files is Dec 26, 2028. Patent and FDA exclusivity operate independently, can overlap, and do not by themselves predict a generic launch date.

Same-ingredient landscape

31 other ANDAs and 5 other NDAs found

17 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 203312 appears in 1 comparison cohort. These groups narrow the same-ingredient landscape, but strength and TE code must still match before interpreting therapeutic equivalence.

Capsule, Extended Release · Oral

Carbidopa; Levodopa

2 applications
Product rows
8
Active applications
2
Active with AB row
0
Crexont · NDA 217186

Why are clinical sections unavailable?

Exact application-label matching status
Exact source match queuedQueue NDA-203312

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.

Strengths & dosage forms

4 approved presentations · NDA 203312
RLD
Strength
23.75MG;95MG
Dosage form
CAPSULE, EXTENDED RELEASE
Route
ORAL
Marketing status
Prescription

Key dates

Approval, patents, exclusivity

  1. Approval

    FDA approval date of this drug product.

    11 yr 9 mo ago

  2. Today

  3. Patent 8377474 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  4. Patent 8377474 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  5. Patent 8454998 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  6. Patent 8454998 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  7. Patent 8454998 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  8. Patent 8454998 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  9. Patent 8454998 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  10. Patent 8557283 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  11. Patent 8557283 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  12. Patent 9089607 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  13. Patent 9089607 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  14. Patent 9089608 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  15. Patent 9463246 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  16. Patent 9533046 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

  17. Patent 9901640 expires

    Listed drug product patent expiration.

    in 2 yr 5 mo

Patent & exclusivity timeline

Protection horizon
2026202720282029TodayPatent 8377474: 2028-12-26Patent 8377474Patent 8377474: 2028-12-26Patent 8377474Patent 8454998: 2028-12-26Patent 8454998Patent 8454998: 2028-12-26Patent 8454998Patent 8454998: 2028-12-26Patent 8454998Patent 8454998: 2028-12-26Patent 8454998Patent 8454998: 2028-12-26Patent 8454998Patent 8557283: 2028-12-26Patent 8557283Patent 8557283: 2028-12-26Patent 8557283Patent 9089607: 2028-12-26Patent 9089607Patent 9089607: 2028-12-26Patent 9089607Patent 9089608: 2028-12-26Patent 9089608Patent 9463246: 2028-12-26Patent 9463246Patent 9533046: 2028-12-26Patent 9533046Patent 9901640: 2028-12-26Patent 9901640
Patent expiryExclusivity endToday

Pharmaceutical detail

FDA product record

Active ingredient

CARBIDOPA; LEVODOPA

Strength

23.75MG;95MG

Dosage form

CAPSULE, EXTENDED RELEASE

Route

ORAL

TE code

Not listed

Application

NDA 203312

Product number

001

Marketing status

Prescription

Reference listed drug (RLD)

Yes

Reference standard (RS)

No

Listed patents

Orange Book patent file
Patents listed in the FDA Orange Book for this product, with expiration date and patent type.
PatentExpiresInType
8377474in 2 yr 5 mo
ProductU-219
8377474in 2 yr 5 mo
ProductU-1645
8454998in 2 yr 5 mo
ProductU-1645
8454998in 2 yr 5 mo
ProductU-1649
8454998in 2 yr 5 mo
ProductU-1646
8454998in 2 yr 5 mo
ProductU-1647
8454998in 2 yr 5 mo
ProductU-219
8557283in 2 yr 5 mo
ProductU-219
8557283in 2 yr 5 mo
ProductU-1645
9089607in 2 yr 5 mo
ProductU-1645
9089607in 2 yr 5 mo
ProductU-1720
9089608in 2 yr 5 mo
Product
9463246in 2 yr 5 mo
ProductU-219
9533046in 2 yr 5 mo
ProductU-219
9901640in 2 yr 5 mo
ProductU-219

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 Carbidopa; Levodopa 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.

Rytary: 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 203312 is shown on this page. Interpret patents, exclusivity, availability, and therapeutic equivalence using the limitations above.

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