Documents filed on Companies House show that the firm had appointed administrators Kroll after encountering difficulties.
The group is one of three companies which form part of Converse Pharma Groups.
The Doncaster-based business, with Testerworld and Eclipse Generics, trade as Doncaster Pharmaceuticals, DE Group, Crosspharma and Eclipse.
The group had served some 4,000 pharmacies across the country and had a turnover of £300m.
However regulators Medicines and Healthcare products Regulatory Agency (MHRA). suspended the operating licences of Testerworld in 2021.
The group underwent a management buy out in 2013 and went on to see significant growth in both turnover and profitability until it began to experience trading issues.