Probiotics International Limited (Protexin) have experienced personnel in all areas of the business led by company directors Toby, Jonathan and Aileen.

Toby Lewis - Managing Director


Toby has been involved in the development, production, presentation and packaging of probiotics to the global market for over twenty years. His background in manufacturing in conjunction with the sales, marketing and technical strengths of the Protexin team helps drive the Protexin brand into the hearts and minds and, more importantly, digestive systems of customers and consumers worldwide.

Toby Lewis


Jonathan Sowler - Commercial Director


Jonathan has extensive experience of working in both veterinary and human health markets in the UK and around the world. As Commercial Director he has overall responsibility for sales, marketing and scientific aspects for each area of the business and is responsible for implementing growth strategies across all divisions.

Jonathan Sowler

Aileen Green - Director Quality and Regulatory Affairs


Aileen is responsible for ensuring product regulatory compliance, managing and monitoring the company's quality system. Control of technical information including product quality control (formulations and samples) and technical data recommendations. She also has a vital role in ensuring that QA systems are understood and fully operational throughout the company.

Aileen Green