Muscle Rulz Gain Rulz formula is made with pure and high-quality protein isolate and whey protein concentrate. This mass gainer is loaded with 50 g of protein, 1250 calories, and 244 g of carbohydrates. It’s also a significant source of calcium, iron, potassium, fiber, sodium, and sugars to fuel your bulked-up physique. Gain Rulz is the perfect supplement for packing on muscle the healthy way with an ideal balance of protein, nutrients, calories, and carbs. Try it as a recovery shake after workouts or between meals to achieve big gains.