Serious Mass Protein Powder

Here's a look at the Optimum Nutrition Serious Mass gainer in a large 6 lb (2.73 kg) tub. This popular calorie-rich protein powder comes in a delicious chocolate flavor, perfect for those aiming to support muscle and weight gain. Each serving delivers an impressive 1250 calories, 53g of protein, and 251g of carbohydrates, along with 25 essential vitamins and minerals, making it a comprehensive choice for anyone serious about their fitness goals.

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