FDA Warning Letter Explorer
Drugs · Letter issue date: Oct 27, 2026

Guangzhou Jiugong Research And Development Biotechnology Co., Ltd.

3 extracted findings

FDA source excerpt, selected passage

Based on our review of drug product labels, the “(b)(4)” contains the color additive “CI 16185” (also known as FD&C Red No. 2 or Amaranth). In 1976, FDA cancelled the certification and delisted FD&C Red No. 2 because it could not be proven safe for use.

Findings and supporting evidence

Model-assisted readings, not an exhaustive interpretation. Compare with the extracted source findings below.

Findings extracted from the letter

Selected FDA passages, not the complete letter.

01
Based on our review of drug product labels, the “(b)(4)” contains the color additive “CI 16185” (also known as FD&C Red No. 2 or Amaranth). In 1976, FDA cancelled the certification and delisted FD&C Red No. 2 because it could not be proven safe for use.
02
Your firm’s quality unit failed to exercise its responsibility to ensure drug products manufactured are in compliance with CGMP and meet established specifications for identity, strength, quality, and purity (21 CFR 211.22).
03
The records and information provided demonstrate that the quality unit (QU) did not effectively exercise its responsibilities to oversee the quality of the drug manufacturing operations. The response includes discrepancies between the color additive on the labeling versus the batch formulation spreadsheet versus the color specified in the certificate of analysis (COA).

Sections and clauses cited

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