Mass Gainers are formula with Maltodextrin and Protein. The carb to protein ratio is anywhere from 90% Maltodextrin:10% Protein: to 50% Maltodextrin:50% Protein.
Mass Gainers usually contains very high calorie. 1300 calories are the most common. The objective of mass gainers are to help hardgainers to put on quality mass - fast. Most hardgainers have low appetite and this makes it difficult for them to get enough calories for muscle building goals.
In order to gain muscle successfully, you need to consume enough calories matching your bodybuilding goals. Mass Gainers may help you to add calories in HIGH calories diet and intense and heavy strength program.