FDA issues Warning Letter for API Facility
Recommendation

10/11 February 2026
Risk analysis, preventive measures and incident management
The US FDA has issued a Warning Letter to Tianjin Zhongan Pharmaceutical Co. Ltd. in Tianjin, China. The company produces APIs and failed to establish adequate GMP procedures at the facility.
For quite some time India was in the center of attention and very little was heard about GMP problems in China (see also RAPS article). This is a bit surprising because a number of non-compliant facilities have been detected in the past. Also the facilities which caused the Heparin Scandal were located in China. The last enforcement action from FDA which became public referred to Import Alerts for the manufacturer Zhejiang Jiuzhou Pharmaceutical and for Zhejiang Zonebanne in China.
The new Warning Letter for Tianjin Zhongan Pharmaceutical lists a number of different non compliance findings. These findings refer to equipment cleaning (risk of cross contamination), not adequate Change Control procedures and failure to adequately review and investigate product deviations. However, in difference to the Warning Letters sent to Indian manufacturers recently data integrity issues have not been detected.
Interestingly the API manufacturer Tianjin Zhongan Pharmaceutical is not listed in EudraGMDP the inspection database in the EU. No entry for GMP Certificates or GMP Non-Compliance Report are available.
Source: FDA Warning Letter to Tianjin Zhongan Pharmaceutical
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