Optimum Nutrition Pro Complex™ Gainer Vanilla Custard - 5.08 Lbs is perfect blend of wholesome pack of nutrition and proteins. Optimum Nutrition Pro brings you a complete pack of weight gain. It contains vitamins; iron and folic acid which helps produce new body cells and formation of red blood cells. Minerals like phosphorus and magnesium which accounts 98% of our body weight have also contributed in the supplement. To make it more effective and healthy, Optimum Nutrition Pro made sure that it contains 0% of trans fat and 3.5 gm of saturated fat which makes it a salubrious diet. 650 calories per serving which means it holds a moderate speed of weight gain which equally focuses on your healthy diet and make sure you are consuming not more than the required amount of fats and cholesterol.