Muscle Milk Gainer Protein Powder 5lbs Directions: Mix 4 scoops (162g) into 16 ounces of water. new Serving Size 4 scoops (162g) MUSCLE MILK® Gainer Protein Powder is a specialized product designed for hard gainers: those of us that more easily lose than gain size and strength. | Use as part of a well-balanced diet that includes whole foods and other protein sources. CytoSport Muscle Milk Gainer Product Information. (81g, 2 rounded scoops) (1 Serving) into 8-10 fl. For hard gainers, size and strength are easier lost than gained. For hard gainers, size and strength are easier lost than gained. new oz. new Muscle Milk Gainer helps provide the calories needed to close the gap, so you can achieve and maintain the size you work so hard for. //