Optimum Nutrition, Inc. (ON) is a range of sports nutrition products which offer premium quality ingredients that taste great. With state-of-the-art production facilities, ON manufacture an award-winning range of nutritional bars, protein powders, ready-to-drink sports drinks, vitamins and essential minerals.
ON's product range, renowned for its variety of great tasting flavours and ease of mixing, includes the world's best selling protein combination of Gold Standard 100% Whey and Casein. All the products have been specifically developed to deliver superior technology to ensure that consumers achieve their goals.
Sold Out £79.99
1250+ CALORIES |
50G PROTEIN |
250+G CARBS |
24 VITAMINS & MINERALS |
ON’s Serious Mass is the ULTIMATE weight gain formula. If you find it difficult to gain weight, Serious Mass will help you develop the physique you've always wanted!
Each delicious shake delivers an incredible 1,250 calories, but no added sugar. This includes 50g of blended protein to support building muscle and 250g of carbs to fuel your workouts.
Simply mix up 2 scoops with milk or water in your ON shaker and enjoy between meals, post-workout and/or before bed.
No surprise that customers voted Serious Mass ‘Weight Gainer of the Year’
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SHOP4SUPPLEMENTS LTD | 08993317
Shop4supplements Ltd, Suite 97, 60 Water Lane, Wilmslow, SK9 5AJ
Specialist retailer of Health Foods & Sports Nutrition supplements.
email - info@shop4supplements.co.uk
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