Extreme MassExtreme Mass by International Protein is a high calorie, nutrient rich formula designed to support serious lean mass and size gains. Perfect for hard gainers and active individuals, it combines five premium protein sources with complex carbohydrates and a blend of healthy fats, including MCTs, canola, and sunflower oils. This combination ensures a steady supply of energy and nutrients to fuel training, support recovery, and maintain an anabolic state
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