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Trusted Partners

an image of a logo for england rugby

As official Performance Nutrition partner of England Rugby, Optimum Nutrition will provide its award-winning products to the England senior men’s and women’s XVs and sevens squads.

As Official Nutrition Education Partner England Rugby and Optimum Nutrition will co-create a “good nutrition for performance” education programme aimed at community adult and age-group rugby players, coaches and parents in England.


The former back-to-back European Champions Cup Rugby winners and current Premiership champions have been setting the standards in European and domestic rugby for many years.

As Official Sports Nutrition Partner to the London based Club for over six seasons, Optimum Nutrition has worked closely with the management and players to ensure the squad consistently reach the Gold Standard Zone in training and on the pitch.

English Institute of Sport

The English Institute of Sport are the team behind the team, delivering a range of performance-impacting solutions to Olympic and Paralympic sports along with a select number of non-Olympic sports through a nationwide network of expertise and facilities. The EIS strives to be the world’s leading institute of high performance sport.

Optimum Nutrition is proud to be a “Preferred Supplier to the EIS” with many of their practitioners using Optimum products as part of performance focused with teams and athletes.

ESSNA Kitemark

European Specialist Sport Nutrition Alliance members abide by a strict Code of Conduct which ensures that products are compliant with the law.

The ESSNA kitemark represents a promise by the company that its products follow the letter of the law to protect consumers.

an image of a logo for informed sport

Optimum Nutrition's UK plant in Middlesbrough is an Informed Sport registered site. Regular on-site inspections and facility swabbing by Informed-Sport affirms the quality systems and integrity of the manufacturing process.

Irish Sailing Logo

Team Ireland’s sailors compete and perform at the highest international standards in European and World Championships and at the Olympic Games and regularly finish on the podium.

Optimum Nutrition is the Official Sports Nutrition Partner to the Irish Sailing Association Performance Team and support these endurance athletes with a broad range of sports nutrition products to meet their performance nutrition needs while in the gym, on the road or out on the water.


With an unrivalled four European Cup titles in ten years, Leinster Rugby are the most successful club in modern European rugby.

Optimum Nutrition has been the Irish Province’s Official Sports Nutrition partner for nearly ten seasons and has worked closely with the management to develop and deliver  

sports nutrition support consistent world-class performance.