Description
Optimum Nutrition Serious Mass 5KG is one of the most trusted mass gainers in the world — engineered for individuals who struggle to gain weight through diet alone or who need extra calories, quality protein, and consistent nutrition to build serious muscle mass.
Every serving of Serious Mass provides a strategic blend of high-quality proteins, complex carbohydrates, and essential nutrients designed to support lean muscle growth, recovery, and energy replenishment. The complex carb profile helps refill glycogen after intense workouts, while the protein matrix delivers amino acids your muscles need to repair and grow stronger.
Ideal for hard gainers, bodybuilders, athletes, and anyone focused on increasing size, this 5KG tub makes it easy to meet daily calorie goals without eating constant extra meals. Whether you use it as a post-workout shake, between meals, or as a snack replacement, Serious Mass makes gaining weight more manageable and results-driven.
