Optimum Nutrition Serious Mass | Giant Nutrition

Optimum Nutrition Serious Mass is one of the most well-known weight gainers worldwide and was specially developed for individuals who struggle to consume enough calories.

The formula combines high-quality carbohydrates, multiple protein sources, as well as creatine and micronutrients, to ensure maximum energy and muscle supply.

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Composition & Effects

Multi-component protein (whey, casein, egg) supports muscle growth and regeneration
Carbohydrate complex (maltodextrin) provides quick and large amounts of energy
Creatine monohydrate increases physical performance during intense exercise
Vitamin & mineral complex (over 20 micronutrients) supports energy metabolism

This product is particularly suitable if you specifically want to achieve a massive caloric surplus.

Result: maximum calorie intake, rapid weight gain, and support for muscle building.

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Advantages at a glance

✔ Over 1200 kcal per serving
✔ 50 g protein per shake
✔ Over 250 g carbohydrates
✔ With creatine & micronutrients
✔ Ideal for hardgainers

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Recommended use

Mix 1 serving (334 g powder) with 600–700 ml water or milk.
For beginners: start with half a serving.

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Ingredients

Maltodextrin, protein blend (whey protein, casein, egg albumin), creatine monohydrate, MCT oil, L-glutamine, choline, inositol, vitamin and mineral complex, flavorings, sweeteners.

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Product details

Name: Carbohydrate-Protein Powder (Weight Gainer)
Contents: 5450 g / 2370g
Servings: approx. 16 / 8
Serving size: 334 g
Ideal for: bulking phase, weight gain, hardgainers
Special feature: Extremely high calorie content with multi-protein & creatine
Not a substitute for a varied and balanced diet and a healthy lifestyle.

Ingredients (per serving – 334 g)

Calories: approx. 1250–1260 kcal
Protein: 50 g
Carbohydrates: 250 g
of which sugars: approx. 20–25 g
Fat: approx. 4–5 g