Science-Backed Nutrition, Trusted by Athletes Worldwide
Founded in 2011 in the United Kingdom and acquired by Director James Markey in 2014, Nutrition X has been dedicated from the very beginning to providing athletes with safe, effective, and science-backed nutrition. Today, we are a trusted name in sports nutrition, renowned for our Informed-Sport certified products and expert dietetic support for both professional and amateur athletes worldwide.
Why Nutrition X?
Expertise & Legacy
At Nutrition X, the “X” stands for expertise. Guided by passion and supported by a team of professors and experts, the brand—led by James Markey and Naomi Christiansen—has grown into one of the most scientifically grounded names in sports nutrition. We deliver certified products designed to enhance athletic performance, backed by education, innovation, and an unwavering commitment to safety.
Authenticity
We prioritise authenticity by formulating products that meet the real needs of athletes—without gimmicks. Guided by integrity and a true passion for sports nutrition, our solutions are designed to empower performance in the most reliable way.
Transparency
Transparency defines our process, from rigorous research and careful ingredient selection to our sustainability commitments. Partnering with science-backed manufacturers, we actively work toward net-zero emissions, taking responsibility for both people and the planet.
Credibility
Credibility is central to our identity. Every product is rooted in robust research, trusted by professionals, and developed in collaboration with experts and athletes. Our goal is clear: to deliver measurable results while upholding the highest standards of safety.