Universal Nutrition Gain Fast 3100 - The ultimate weight gain for mass building. One serving provides 162 grams of carbohydrates, 37 grams of protein, and only 8 grams of fat. It contains anabolic boosters, performance enhancing herbs, natural plant sterols, essential fatty acids, digestive enzymes and muscle optimizers. Gain Fast 3100 combined with low-fat cottage cheese, eggs, bananas, honey and skim milk provides more than 3100 calories that can be taken throughout the day. Available in different flavors and pack sizes.