FDA Warning Letter Explorer
Drugs · Aug 6, 2025

ABBE Laboratories, Inc.

6 extracted findings · 5 model-assigned issue types

FDA source excerpt, selected passage

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 211.84(d)(2)).

Findings and supporting evidence

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

Components & suppliers21 CFR 211.84(d)(1)

Failed to test identity of each component shipment and validate supplier test analyses.

Supporting FDA text
Source excerpt · automated text-match check

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 211.84(d)(2)).

Components & suppliers

Failed to perform identity testing for high-risk components like propylene glycol and glycerin.

Supporting FDA text
Source excerpt · automated text-match check

You also failed to adequately test for identity each shipment of every lot of propylene glycol and glycerin, components at higher risk of diethylene glycol (DEG) or ethylene glycol (EG) contamination, received at your facility.

Facilities & equipment

Cleaning validation study was inadequate and lacked worst-case product determination.

Supporting FDA text
Source excerpt · automated text-match check

Your 2009 cleaning validation study for the Kettle (b)(4) equipment is inadequate to ensure your cleaning procedures are effective for the multiple OTC drug products your firm manufactures.

Facilities & equipment

Failed to perform new cleaning validation when introducing a new product.

Supporting FDA text
Source excerpt · automated text-match check

You also failed to perform a new cleaning validation study when you began manufacturing a new drug product, End Zit Acne Drying Lotion, which you determined to be the most difficult to clean product due to the titanium dioxide active ingredient, on shared equipment.

Facilities & equipment

Cleaning validation study lacked analysis for API residues.

Supporting FDA text
Source excerpt · automated text-match check

In addition, the cleaning validation study for your kettle lacked analysis for API residues.

Records & data integrity

Stopped documenting cleaning activities in logbooks around 2020.

Supporting FDA text
Source excerpt · automated text-match check

you stopped documenting cleaning activities in your logbooks and status of the equipment around 2020.

Production & process controls

Failed to provide validation protocols and reports for manufacturing processes.

Supporting FDA text
Source excerpt · automated text-match check

you were unable to provide a validation protocol and corresponding report with established parameters (e.g., mixing speeds, temperature, hold times prior to filling) to demonstrate process control for each product you manufacture.

Production & process controls

Process validation finding is a repeat from 2018 inspection.

Supporting FDA text
Source excerpt · automated text-match check

This is a repeat finding from your 2018 inspection when you committed to initiate process validation by September 2018 and forward final reports to FDA upon completion.

Quality unit & oversight

Quality unit lacked oversight and released products with incomplete records.

Supporting FDA text
Source excerpt · automated text-match check

we collected documents, including batch records and an out-of-specification investigation record, that were incomplete (e.g., documents had blank spaces, missing signatures), although the OTC drug products were released by your quality unit (QU).

Quality unit & oversight

Failed to perform annual product reviews since at least 2018.

Supporting FDA text
Source excerpt · automated text-match check

you failed to perform annual product reviews of your OTC drug products since at least 2018.

Quality unit & oversight

Failed to complete final release checklist for distributed batches.

Supporting FDA text
Source excerpt · automated text-match check

you failed to complete the Finished Product Final Release Checklist for at least (b)(4) batches of OTC drug products already distributed to the market.

Findings extracted from the letter

Selected FDA passages, not the complete letter.

01
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 211.84(d)(2)).
02
Your firm failed to establish and follow adequate written procedures for cleaning and maintenance of equipment (21 CFR 211.67(b)).
03
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)).
04
You failed to demonstrate you adequately validated the manufacturing processes for your OTC drug products. You stated that you validated the process for **(b)(4)** Sunscreen, **(b)(4)** SPF 30, **(b)(4)** SPF 30, and End Zit Acne Drying Lotion; however, you were unable to provide a validation protocol and corresponding report with established parameters (e.g., mixing speeds, temperature, hold times prior to filling) to demonstrate process control for each product you manufacture.
05
Your firm failed to establish adequate written responsibilities and procedures applicable to the quality control unit and to follow written procedures applicable to the quality control unit (21 CFR 211.22(d)).
06
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.

What FDA requested

Model-assisted summary. Consult the letter for complete requests and conditions.

  • Provide DEG and EG test results from retains for all high-risk component lots.
  • Perform retain testing of finished batches if component retains unavailable.
  • Provide full risk assessment for products containing DEG/EG risk ingredients.
  • Describe testing of each component lot for identity, strength, quality, purity.
  • Provide chemical quality control specifications for high-risk components.
  • Provide independent review of material system and supplier qualifications.
  • Provide CAPA plan for cleaning and disinfection program remediation.
  • Provide comprehensive assessment and remediation plan for quality unit.

Sections and clauses cited

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

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