Weight Gainers, like the name suggests, are excellent products for those looking to build muscle and put on size. They are also great options for individuals who really struggle to meet their nutrient requirements for the day, or simply find it very hard to hold or put on weight. These gainers hold a lot more calories than straight protein powders due to the fact they have a combination of protein and carbohydrates included.
They usually come in different ratios (Carbs:protein) as well, ranging from smaller carbohydrate inclusions (10-30g), upward to very large amounts (200g+). The added carbs not only provide extra calories, but allow for a greater spike in insulin post workout, helping shuttle more amino acids and nutrients into muscle cells. This carries with it great recovery and growth potential benefits. On top of this, majority of these types of gainers include extra vitamin and mineral complexes or extra amino acids like glutamine or creatine to help strength, recovery and muscle growth.