Instant Mass® Heavyweight is a protein specifically designed for weight gain, ideal for hardgainers and athletes seeking a high-quality source of proteins and complex carbohydrates.

This formula excels in five key areas, offering the most advanced and effective protein blend. Quattro® is a unique protein composition consisting of three different types of whey protein and pure micellar casein.

The complex Quattro® protein includes special forms of whey protein and quality micellar casein. Two different hydrolyzed whey proteins with high DH and one with low DH are used for faster absorption.

It includes selected whey protein with high bioactive components and branched-chain amino acids (BCAA) content, as well as pure ultra-filtered micellar casein that feeds the body with amino acids for up to 4 hours.

Heavyweight differs from other weight gain formulas by avoiding bad calories from simple sugars. It contains a unique blend of oats, maltodextrin, and trehalose, without corn syrup or fructose.

The composition includes Creapure creatine, zinc, magnesium, and vitamin D, providing support for a healthy immune system with EU-approved doses of vitamins and minerals such as vitamin C, vitamin D, and copper.