US · 21 CFR

Findings citing 21 CFR 211.166

Stability testing.

131 findings citing this section, drawn from 130 published documents. The most recent cases are below; the full set is in search.

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US FDA R3 Medical Companies 2026-08-25

Failure to establish and follow a written testing program designed to assess the stability characteristics of drug products and to use results of such stability testing to determine appropriate storage conditions and expiration dates, as required by 21 CFR 211.166(a). For example, your firm assigns a 24-month expiration date to your products without supporting stability testing data. The CGMP violations applicable to your Bello and Regen facilities pertaining to your products include, but are not limited to, the following: 7 6. The responsibilities and procedures applicable to the quality control unit are not in writing and fully followed, as required by 21 CFR 211.22(d). For example, at the time of the inspection, written procedures describing the responsibilities of the quality unit had not been established, including but not limited to, procedures for the approval or rejection of drug products (21 CFR 211.22(a)) and the handling of all written and oral complaints regarding a drug product (21 CFR 211.198(a)). Responses to the Form FDA-483 We have reviewed your responses to the Form FDA-483s issued to each of your Bello and Regen facilities dated January 08, 2026 and January 06, 2026, as well as your correspondence dated November 20, 2025, in detail. While you represented that you have implemented or plan to implement certain corrective actions, the described corrective actions are not adequate to remedy the violations noted above. For example, your responses do not address your continued distribution of your products or specific plans for disposition of the remaining inventory manufactured under the violative conditions outlined above. We note that certain corrective actions cannot be evaluated because they lack supporting documentation. Further, for your previously distributed products, you do not describe actions you have taken or plan to take that adequately address the impact of the above-noted deficiencies on your distributed products that are still within expiry and were manufactured under the above-described violative conditions. We acknowledge your commitment to temporarily suspend manufacturing operations until you have made corrections to the observations listed on the Form FDA-483 issued to each of your Bello and Regen facilities. However, this does not resolve the violations outlined in this letter because your responses do not adequately address your failure to have an Investigational New Drug (IND) in effect to study your products addressed in this letter or your lack of an approved BLA to lawfully market your products. FDA has previously provided notice to you, David Greene, in a letter dated May 28, 2019, that based on a review of your website for R3 Stem Cell, LLC (www.r3stemcell.com) at that time, your firm appeared to offer “regenerative stem cell therapies” while promoting these stem cell therapies for numerous diseases or conditions, such as amyotrophic lateral sclerosis (ALS), diabetes, kidney failure, Lyme disease, Parkinson’s disease, and stroke. Based on that review, R3 Stem Cell, LLC did not appear to qualify for any exception under 21 CFR 1271.15; the “regenerative stem cell therapies” were intended for nonhomologous uses and thus would be regulated as drugs as defined in section 201(g) of the FD&C Act [21 U.S.C. 321(g)] and biological products as defined in section 351(i) of the PHS Act [42 U.S.C. 262(i)]. However, our review of your current websites and various social media accounts, which are also linked to your websites, indicates umbilical stem cell therapy and exosome therapy continue to be offered by R3 Stem Cell, LLC for treatment of various diseases and conditions, as described above. Additional Concerns In addition to the violations described above, we have the following concerns: FDA’s review of information and records collected during the inspections documented Bello also manufactures the following umbilical cord derived 8 products: BelloWJ, BelloXO, and BelloXOL. Your response dated January 08, 2026 asserts that Bello is a manufacturer of HCT/Ps and is subject only to current good tissue practice (CGTP) requirements of 21 CFR Part 1271 and is regulated solely under section 361 of the PHS Act); however, review of the evidence collected shows these products do not appear to meet the relevant criteria to be regulated solely under section 361 of the PHS Act, for the reasons discussed above. These products appear to be drugs and/or biological products, which are subject to premarket review and approval requirements. FDA review of Bello’s manufacturing records revealed that (b)(4) is a component of the (b)(4) used during Bello’s manufacturing process of products derived from umbilical cord tissue; however, there did not appear to be evidence that testing for (b)(4) had been performed prior to the release of these products, as required by (b)(4) . Bello determines donor eligibility upon review of relevant medical records per your contract agreement with (b)(4) . The “ Donor Eligibility Criteria ” documents (effective date 08/15/2023) submitted with your January 8, 2026, response and also collected during the inspection do not include “qualifiers/comments” for Transmissible Spongiform Encephalopathy (TSE). In accordance with 21 CFR 1271.75(a)(1)(iv), all donors of cells or tissues, except as provided under 1271.90, must be screened by reviewing the donor’s relevant medical records for risk factors for, and clinical evidence of, relevant communicable disease agents and diseases, including human transmissible spongiform encephalopathy, including Creutzfeldt-Jakob disease.…

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US FDA K.C. Pharmaceuticals, Inc. 2026-08-18

Your firm failed to establish and follow an adequate written testing program designed to assess the stability characteristics of drug products (21 CFR 211.166(a)). Your firm has not established stability indicating methods for the OTC (b)(4) drug products you distribute to the U.S. market. For example, the validation protocol for the assay of Naphazoline HCl (NPZ) in the (b)(4) formulation detailed a stress study; however, the report stated that the stress study would be performed later and reported separately. Assay for NPZ is a test conducted for stability studies of the (b)(4) formulation. Without forced degradations studies to establish specificity, the accuracy of the test assay results cannot be assured throughout the shelf-life of the product during stability. In your response, you acknowledge that initial forced degradation studies for the current OTC (b)(4) formulations could not be located, and you commit to repeating these studies and creating an action plan based on the results. In addition, you commit to conducting a three-year retrospective review for the active pharmaceutical ingredient (API) testing during stability for each product code and to conducting a review of prior annual product reviews to evaluate any stability trends observed for the API and preservative systems for each product code. Proper document control and data management is foundational to CGMP to ensure the availability and integrity of data. Data should be attributable, legible, contemporaneously recorded, original or a true copy, and accurate (ALCOA) to ensure complete and accurate records. Your response is inadequate. Your review of retrospective data using methods that have not been validated as stability indicating provides insufficient confidence in your marketed drug products. Upon development of your stability indicating methods, you should add additional batches to your stability program, including retains of older batches (e.g., (b)(4) ). You did not assess the impact of inadequate stability testing and the potential for degradation products in OTC (b)(4) drug products within expiry distributed to the U.S. market. In response to this letter, provide: A comprehensive independent assessment of your laboratory practices, procedures, methods, equipment, documentation, and analyst competencies. Based on this review, provide a detailed plan to remediate and evaluate the effectiveness of your laboratory system. A comprehensive independent assessment and CAPA plan to ensure the adequacy of your stability program. Your remediated program should include, but not be limited to: o Stability indicating methods. o Stability studies for each drug product in its marketed container-closure system before distribution is permitted. o An ongoing program in which representative batches of each product are added each year to the program to determine whether the shelf-life claim remains valid o Detailed definition of the specific attributes to be tested at each station (timepoint), as part of a program that encompasses each quality attribute that may change over the product shelf-life. o All procedures that describe these and other elements of your remediated stability program. A commitment to notify FDA within 3 days of any stability failures.

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US FDA Suretec Innovations, LLC 2026-08-18

Your firm’s quality control 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). Your firm failed to establish an adequate QU with the responsibilities and authority to oversee the manufacturing of drug products. For example, the QU failed to ensure: Establishment of appropriate written procedures for production and process controls, including appropriate qualification of the (b)(4) system (21 CFR 211.100(a)). Establishment of an appropriate 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)). Establishment of adequate written procedures defining QU responsibilities and controls (21 CFR 211.22(d)). An adequate number of qualified personnel to perform and supervise the manufacturing, processing, packing, or holding of each drug product (21 CFR 211.25(c)). Your firm’s quality systems are inadequate. For help implementing quality systems and risk management approaches to meet the requirements of CGMP regulations 21 CFR, parts 210 and 211, see FDA’s guidance documents Quality Systems Approach to Pharmaceutical CGMP Regulations at https://www.fda.gov/media/71023/download, Q9(R1) Quality Risk Management at https://www.fda.gov/media/167721/download, and ICH Q10 Pharmaceutical Quality System at https://www.fda.gov/media/71553/download. In response to this letter, provide: A comprehensive assessment and remediation plan to ensure your QU is given the authority and resources to effectively function. The assessment should also include, but not be limited to: o A determination of whether procedures used by your firm are robust and appropriate o Provisions for QU oversight throughout your operations to evaluate adherence to appropriate practices o A complete and final review of each batch and its related information before the QU disposition decision o Oversight and approval of investigations and discharging of all other QU duties to ensure identity, strength, quality, and purity of all products. CGMP Consultant Recommended Based upon the nature of the violations we identified at your firm, you should engage a consultant qualified as set forth in 21 CFR 211.34 to evaluate your operations and to assist your firm in meeting CGMP requirements. The qualified consultant should also perform a comprehensive six-system audit of your entire operation for CGMP compliance and evaluate the completion and efficacy of your CAPA before you pursue resolution of your firm’s compliance status with FDA. Your use of a consultant does not relieve your firm’s obligation to comply with CGMP. Your firm’s executive management remains responsible for resolving all deficiencies and systemic flaws to ensure ongoing CGMP compliance. Drug Listing Violations Section 510(j) of the FD&C Act and 21 CFR Part 207 set forth the requirements for the listing of drugs. In addition to listing a drug that you manufacture under your own labeler code, under 21 CFR 207.41(c)(1), you are required to list each drug you manufacture for commercial distribution under the trade name or label of a PLD using an NDC that includes such PLD’s labeler code. Evidence from the most recent inspection of your site and a search of eDRLS confirms that you are manufacturing KleenLine Alcohol-Free Sanitizing Wipes for a PLD, Brady Industries, Inc., but you did not list this drug under the PLD’s trade name and labeler code as required. Therefore, you failed to fulfill your drug listing obligations in accordance with section 510 of the FD&C Act. Failure to provide listing information for a drug in accordance with 510(j) of the FD&C Act is prohibited under section 301(p) of the FD&C Act. Under section 502(o), a drug is misbranded if it is not included in a list required by section 510(j). Under section 301(a), the introduction or delivery for introduction, or the causing thereof, into interstate commerce of any drug that is misbranded is prohibited. Complete, accurate, and up-to-date establishment registration and drug listing information is essential to promote and protect patient safety. FDA relies on establishment registration and drug listing information for several key programs, including drug establishment inspections, supply chain security, and post-market surveillance. Establishment registration and drug listing information is also widely used outside FDA for purposes such as electronic prescribing and electronic health records, insurance reimbursement, and patient education. We note that the labeling provided in your drug listing for Hand Sanitizing Alcohol-Free Wipes, NDC 84111-000, bears the trade name of what appears to be another PLD. Please update your labeling accordingly. It is your responsibility to ensure that all drugs manufactured at your establishment comply with all establishment registration and drug listing requirements under section 510 of the FD&C Act, 21 U.S.C. 360, 21 CFR Part 207, and all other applicable FDA regulations. Registration and listing information and instructions on how to properly register an establishment or submit drug listings can be found at Electronic Drug Registration and Listing Instructions .

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US FDA Woodbine Products Company Inc. 2026-08-04

Your firm’s quality control 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). Your quality unit (QU) failed to perform adequate oversight for the manufacture of your OTC drug products. For example, your QU failed to ensure the following: Establishment of adequate written responsibilities and procedures applicable to the…

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US FDA Sante Manufacturing Inc. 2026-06-16

Your firm’s quality control 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). Based on the records and the information you provided, you did not demonstrate that your quality unit (QU) adequately exercises its authority and responsibilities including, but not limited to, implementing effective procedures and conducting…

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US FDA IDO Pharm Co., Ltd. 2026-05-12

Your firm’s quality control 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). Your quality unit (QU) did not adequately exercise its authority and responsibilities including, but not limited to, implementing effective procedures and conducting adequate oversight of the drug products you manufacture. For example, your QU…

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