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The US FDA inspected a Chinese API manufacturer from 2 to 6 September 2024 and found significant GMP violations. The deficiencies relate to quality control, cleaning procedures and stability testing. As an immediate consequence, the FDA issued an Import Alert.

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In March 2025, the U.S. FDA issued a Warning Letter (WL) to the Indian company "Aspen Biopharma Labs Private Limited" after having inspected its site in September 2024 and criticised the company's stability program.

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A recent FDA Warning Letter to a Chinese OTC manufacturer highlights serious deficiencies in analytical testing, inadequate quality oversight, and multiple data integrity issues. These include missing data, discrepancies between original and re-written testing records and certificates of analysis (COAs), and the use of correction fluid (white-out) to alter laboratory documentation.

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A Chinese manufacturer of OTC products (such as alcohol swabs) received a warning letter from the FDA due to serious violations. The warning letter is not based on an on-site inspection, but on a review of documents that the pharmaceutical manufacturer submitted to the FDA upon request. The deficiencies include the areas of quality control and quality assurance, process validation and the water system. Read more.

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The U.S. Food and Drug Administration (FDA) has issued a new Warning Letter due to CGMP violations related to combination products. Key violations include inadequate controls to ensure the sterility of drug products, deficient dissolution testing, and a lack of process validation.

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The United States Food and Drug Administration has issued a Warning Letter to a Chinese manufacturer. The violations include inadequate raw material testing and insufficient stability testing programs.

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With the draft chapter <1110>, the USP completes its programme with recommendations on the subject of contamination control strategy, as already called for in other documents.

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A manufacturer of OTC products from Mesquite, Texas received a Warning Letter from the US FDA for deficiencies in various areas ranging from microbiology and raw material analysis to cleaning and disinfection.

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The US FDA recently published a further Warning Letter to a Chinese manufacturer, which has joined the growing list of companies that have established no or inadequate quality control units due to the lack of testing and control of raw materials used.

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In a recent GMP news, we pointed out deficiencies, especially regarding stability data, of an Indian manufacturer by referencing an FDA Warning Letter. This Warning Letter also offers interesting interpretation aids on the subject of cleaning validation. What is the FDA interested in?

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