Mass gainers have the most calories per serving of any shake, mostly from carbohydrates with added protein. Compare calories, protein and sugar per serving, and check how many servings the pack really holds.
For a lighter option see high-protein gainers, or read the full gainer guide.
Mass Gainer: questions
How many calories does a mass gainer have?
Often 500 kcal or more per serving. The exact figure and serving size are on each label.
When do people take a mass gainer?
Usually between meals or after training, as an extra meal. Follow the directions on the pack.

