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ZTLIDO — FDA Complete Response Letter (NDA 207962)

Issued to Scilex Pharmaceuticals, Inc.. Application reviewed but not approved; deficiencies must be corrected.

Application

NDA 505b1 • 207962

Product

ZTLIDO

Company

Scilex Pharmaceuticals, Inc.

Review center

Other

Stage

Final Decision

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What did FDA decide for ZTLIDO?

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 Safety and adverse events, Labeling, packaging, and proprietary name, Chemistry, manufacturing, and controls, Nonclinical evidence. Theme counts identify where the letter discusses a topic; they do not replace review of the exact redacted letter.

Key details in this letter

  • 1Safety and adverse events: 18 source-text matches.
  • 2Labeling, packaging, and proprietary name: 17 source-text matches.
  • 3Chemistry, manufacturing, and controls: 9 source-text matches.
  • 4Nonclinical evidence: 9 source-text matches.
Safety and adverse eventsLabeling, packaging, and proprietary nameChemistry, manufacturing, and controlsNonclinical evidenceBioequivalence and pharmacokinetics

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 ZTLIDO complete response letter

What does this complete response letter mean for ZTLIDO?

Application reviewed but not approved; deficiencies must be corrected. Requires resubmission addressing deficiencies. FDA issued this letter to Scilex Pharmaceuticals, Inc. on May 10, 2016.

What is NDA 207962?

NDA 207962 is the application under which FDA issued this complete response letter for ZTLIDO to Scilex Pharmaceuticals, Inc.. It was reviewed by FDA Other. The letter is dated May 10, 2016.

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.