FDA warning letter · Drugs

Yusef Manufacturing Laboratories, LLC

Issued · Posted by FDA

Selected passages from the FDA letter

Quoted FDA text from the published dataset. These selected excerpts are not the complete letter.

Passage 1

Your firm failed to conduct at least one test to verify the identity of each component of a drug product. Your firm also failed to validate and establish the reliability of your component supplier’s test analyses at appropriate intervals. (21 CFR 211.84(d)(1) and (2))

Passage 2

You failed to adequately test your incoming components for identity before using the components to manufacture your over-the-counter (OTC) drug products. Additionally, you relied on certificates of analysis (COAs) from unqualified suppliers for specifications such as purity, strength, and quality. By not adequately analyzing your components for identity, purity, strength, and quality, you failed to ensure your incoming components meet appropriate specifications.

Passage 3

Your firm failed to thoroughly investigate any unexplained discrepancy or failure of a batch or any of its components to meet any of its specifications, whether or not the batch has already been distributed (21 CFR 211.192).

Passage 4

Your firm failed to establish laboratory controls that include scientifically sound and appropriate specifications, standards, sampling plans, and test procedures designed to assure that components, drug product containers, closures, in-process materials, labeling, and drug products conform to appropriate standards of identity, strength, quality, and purity (21 CFR 211.160(b)).

Passage 5

Your firm failed to establish written procedures for production and process control designed to assure that the drug products you manufacture have the identity, strength, quality, and purity they purport or are represented to possess (21 CFR 211.100(a)).

Passage 6

You failed to adequately validate your manufacturing processes used to manufacture your drug products and demonstrate that your processes are reproducible and controlled to consistently yield drugs of uniform character and quality.

Passage 7

Your firm failed to follow an adequate written testing program designed to assess the stability characteristics of drug products and to use results of stability testing to determine appropriate storage conditions and expiration dates (21 CFR 211.166(a)).

Passage 8

Failure to address violations may also cause FDA to withhold issuance of Export Certificates. FDA may withhold approval of new applications or supplements listing your firm as a drug manufacturer until any violations are completely addressed and we confirm your compliance with CGMP. We may re-inspect to verify that you have completed corrective actions to address any violations.

Citations in the original letter

As cited in this historical letter, not a statement of current regulatory requirements.

  • 21 CFR 210
  • 21 CFR 211.84(d)(1)
  • 21 CFR 211.192
  • 21 CFR 211.160(b)
  • 21 CFR 211.100(a)
  • 21 CFR 211.166(a)
  • 21 CFR 211.34