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OPTIMUM NUTRITION has always been about helping people unlock their potential. No matter your goal or level, if you’re putting it in, we’ll help you get more out. As the World’s #1 sports nutrition brand, we’ve been delivering trusted performance nutrition for over 40 years.
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What Is Magnesium and What Does It Do?
Magnesium is an essential mineral, not a vitamin. The body cannot make it, so it must come from food and, where appropriate, supplements.
Magnesium Supplements: Why More Magnesium Isn’t Always Better
When choosing a magnesium supplement, it is easy to assume that the product with the most magnesium must be the best. But the biggest number on the label doesn't necessarily mean the best-quality s...
Clear Protein Explained: What It Is, Why It's Different and Which One Is Right for You
Clear Protein delivers everything you'd expect from a premium whey protein—high-quality protein, a complete amino acid profile and support for muscle growth and maintenance—but in a light, refreshi...
References
*Source: Optimum Nutrition. The UK’s #1 Sports Nutrition brand. Circana (UK) Ltd, All Outlets incl Chemists & HB, UK, Sports Nutrition, Value Sales, MAT to 3 Jan 2026
