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DUOBRII — FDA Complete Response Letter (NDA 209354)

Issued to Dow Pharmaceutical Sciences, Inc.. Application reviewed but not approved; deficiencies must be corrected.

Application

NDA 505b1 • 209354

Product

DUOBRII

Company

Dow Pharmaceutical Sciences, Inc.

Review center

Other

Stage

Final Decision

Response due

January 1, 2020

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What did FDA decide for DUOBRII?

Source facts and Assyro context are separated so you can scan the action quickly without treating analysis as an FDA conclusion.

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Source facts

FDA's complete response letter contains source-text evidence related to Labeling, packaging, and proprietary name, Nonclinical evidence, Bioequivalence and pharmacokinetics, Device constituent and human factors. Theme counts identify where the letter discusses a topic; they do not replace review of the exact redacted letter.

Key details in this letter

  • 1Labeling, packaging, and proprietary name: 14 source-text matches.
  • 2Nonclinical evidence: 7 source-text matches.
  • 3Bioequivalence and pharmacokinetics: 2 source-text matches.
  • 4Device constituent and human factors: 1 source-text match.
Labeling, packaging, and proprietary nameNonclinical evidenceBioequivalence and pharmacokineticsDevice constituent and human factors

Suggested next step

Review the exact redacted FDA letter and address each stated deficiency before resubmission.

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Built from structured FDA metadata and deterministic source-text signals. Topic matches are navigation aids, not legal or regulatory conclusions. Verify material decisions against the original FDA document.

FDAPDFUpdated Jul 30, 2026

FDA source document

Read the full FDA complete response letter (PDF)

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Common questions about the DUOBRII complete response letter

What does this complete response letter mean for DUOBRII?

Application reviewed but not approved; deficiencies must be corrected. Requires resubmission addressing deficiencies. FDA issued this letter to Dow Pharmaceutical Sciences, Inc. on June 15, 2018.

What is NDA 209354?

NDA 209354 is the application under which FDA issued this complete response letter for DUOBRII to Dow Pharmaceutical Sciences, Inc.. It was reviewed by FDA Other. The letter is dated June 15, 2018.

What happens after an FDA complete response letter?

FDA will not approve the application in its present form. The sponsor can resubmit after addressing every deficiency listed in the letter — which starts a Class 1 (two-month) or Class 2 (six-month) resubmission review clock — withdraw the application, or request an opportunity for a hearing.