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Welcome to Clinical Services International

Clinical Services International (CSI) is a world leader in the sourcing and management of quality certified commercially available medicines (comparators, concomitant medication, rescue medication) for clinical trials.

Headquartered in London and with operations in the UK, Germany, and the USA, we provide efficient solutions and serve global trials.

Our longstanding experience in intelligent sourcing and clinical trials enables us to provide custom made solutions to address the most complex requirements.

We accelerate drug development and reduce timelines by providing a fully integrated service.

We are not a pharmaceutical wholesaler:
We are CSI: the science-based clinical trial supply leader.

We are passionate about customer service, quality, innovation, and making rapidly available safe medicines.

We areā€¦

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A Guide to Comparator Sourcing in Clinical Trials

Latest News

Covid-19 Notice Posted in: News CSI has been monitoring the global COVID-19 pandemic since its outbreak in China in early 2020. Using guidance from global… Read More
A comparator sourcing catch-up over coffee Posted in: News Clinical Trial Supply Europe 2020 is only a few days away, promising a great opportunity to rub shoulders with more… Read More
We Are Attending Clinical Trial Supply Europe 2020 Posted in: News CSI are attending clinical trial supply Europe. The conference will take place in the Novotel Madrid Center Hotel 11th -… Read More