Weight gainers are protein shakes whose protein source consists mainly of whey proteins (mostly concentrate with some isolate as well). Some also include other proteins such as milk proteins and/or egg. These products are characterized by their extremely lofty carbohydrate content; typically in the configuration of maltodextrin (a high glycemic complex carb) and fructose (uncomplicated sugar originating from fruits). Weight gainers were very popular back in the 90s but their popularity has died mainly because most people do not have the fast metabolism of a hard gainer; so as a result, a high carbohydrate nourishment applied on a person with over 10% body fat typically leads mostly to fat gains instead of muscle stack gains. For hard gainers however and bodybuilders who are below 10% cadaver fat, these products be very useful for getting in the amount of property calories required to gain distinction muscle.
They are best when used for the mid-morning, mid-afternoon and standard workout meals as the carbohydrate content is of a fast released nature. They can be confused with fruit liquid or skim extract, and in order to increase the calorie content the use of flax seed oil and fruits is invaluable.