Optimum Nutrition Serious Mass Supplement 5.45 kg (16 Shakes)
From
£58.99
1 offer offers at 1 retailer
Optimum Nutrition propose Serious Mass Supplement 5.45 kg (16 Shakes) chez 1 revendeurs. Utilisez notre comparateur pour le meilleur prix. Des 58,99 €.
Listed since 7 April 2026
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Description
Optimum Nutrition’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! Serious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, a highly active metabolism, weaker appetite and on-the-run lifestyle can make it a real challenge to consume enough calories through whole foods alone. Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving to boost daily calorie intake, 50g high protein to support muscle growth and repair, over 250g carbohydrates helping support muscle recovery , and now with 3g added Creatine to support performance per serving, you’ve got nothing to lose and lots to gain. It is time to stop thinking small and get serious – SERIOUS MASS 1250 Calories. 50 g of Whey Protein. 25 Vitamins and Minerals. 3 GRAMS OF CREATINE TO SUPPORT PERFORMANCE◊. Ideal formula to support weight gains. Enjoy post work-out and between meals. Available in a range of sizes and great tasting flavours Ready to mix powder with protein, carbohydrates, vitamins and minerals, with sweetener Optimum Nutrition’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!
Full specifications
| Marque | Optimum Nutrition |
Overview of the Serious Mass Supplement 5.45 kg (16 Shakes)
When it comes to Health & Beauty, the Serious Mass Supplement 5.45 kg (16 Shakes) by Optimum Nutrition is a reference that savvy buyers know well. Its value for money in 2026 deserves particular attention, especially given its availability across many retailers and the brand's strength in the market. Our comparison tool lets you view all available offers in real time, with or without free delivery, and click directly on the offer of your choice.
What makes the Serious Mass Supplement 5.45 kg (16 Shakes) stand out in 2026
This product stands out for the build quality that is characteristic of the Optimum Nutrition brand. Users particularly appreciate its reliability in daily use and how easy it is to get started right from the first use. The design, intended for regular use, ensures satisfying durability, and the balance between the features offered and the asking price is well received by buyers. Optimum Nutrition has a strong reputation in the Health & Beauty category, which makes it easy to access after-sales service and the manufacturer warranty when needed. You can also compare with the ON Womens Black Legging L to refine your choice.
Performance and key features
In the Health & Beauty category, buyers pay close attention to declared performance and build quality. The Serious Mass Supplement 5.45 kg (16 Shakes) meets these expectations with technical specifications that reflect Optimum Nutrition's positioning on this segment. The key features, available in the spec sheet on this page, allow you to verify this product matches your needs before finalising your purchase. Also compare with the ON Womens Black Legging L from the same brand to refine your decision.
Design and ease of use
The Serious Mass Supplement 5.45 kg (16 Shakes) is generally described as intuitive by users in the Health & Beauty category. Optimum Nutrition designed this product to be accessible from the first use, whether you are a beginner or an experienced user in this range.
Highlights
Highlights
- Optimum Nutrition’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! Serious weight gain requires serious calories
- However
- For many aspiring to be bigger