R1 Mass Gainer

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R1 Mass Gainer by Rule One Proteins is a high-calorie supplement formulated for individuals aiming to increase muscle mass and size. Each serving delivers over 1,220 calories, comb ining more than 250 grams of carbohydrates with 40 grams of protein sourced from a blend of whey concentrate, isolate, and hydrolysate. This 6:1 carbohydrate-to-protein ratio is designed to support rapid weight gain and muscle recovery. The formula is enhanced with creatine, medium-chain triglycerides (MCTs), and glutamine to further support muscle growth and energy levels. Additionally, it provides 9 grams of naturally occurring branched-chain amino acids (BCAAs) per serving. R1 Mass Gainer is free from creamers, soy protein, and banned substances, and it is Informed Choice® Certified, ensuring it has been tested for prohibited substances by a world-class sports anti-doping lab. Show more