Mass gainer comes in the picture when you want to gain weight or bulk up. At the same time, you need to have proper meals. Its intake depends on your diet, training habit, body type.
Mass gainer is a high calorie supplement and contains carbohydrates, protein and fat, vitamins, minerals, amino acids and other supplements, for example, creatine, in different amounts.
1 serving of a mass gainer supplement can have calories ranging from 320 to 1000, and 16 g to 60 g protein.
Mass gainer can be mixed with milk/water, and should be taken pre- or post-workout.