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ZYNRELEF KIT — FDA Complete Response Letter (NDA 211988)

Issued to Heron Therapeutics, Inc.. Application reviewed but not approved; deficiencies must be corrected.

Application

NDA 505b1 • 211988

Product

ZYNRELEF KIT

Company

Heron Therapeutics, Inc.

Review center

Other

Stage

Final Decision

Response due

January 1, 2023

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What did FDA decide for ZYNRELEF KIT?

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, Safety and adverse events, Chemistry, manufacturing, and controls. 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: 13 source-text matches.
  • 2Nonclinical evidence: 6 source-text matches.
  • 3Safety and adverse events: 3 source-text matches.
  • 4Chemistry, manufacturing, and controls: 3 source-text matches.
Labeling, packaging, and proprietary nameNonclinical evidenceSafety and adverse eventsChemistry, manufacturing, and controls

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 ZYNRELEF KIT complete response letter

What does this complete response letter mean for ZYNRELEF KIT?

Application reviewed but not approved; deficiencies must be corrected. Requires resubmission addressing deficiencies. FDA issued this letter to Heron Therapeutics, Inc. on June 26, 2020.

What is NDA 211988?

NDA 211988 is the application under which FDA issued this complete response letter for ZYNRELEF KIT to Heron Therapeutics, Inc.. It was reviewed by FDA Other. The letter is dated June 26, 2020.

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.