Just like other supplements, weight gain supplements are used by people to give their bodies support during the rigorous process of gaining weight. For other users, weight gain supplements serve as a complementary to the program they are enrolled in just to gain weight. If you are one of those people who are getting tired of waiting just to gain weight, here are some weight gain supplements that can help you gain weight fast and easy. They can be found in the fitness areas of supermarkets, in healthy options stores, as well as in various fitness centers that offer weight gain programs. Although some of these weight gain supplements are proven to show positive results, always be careful in buying one because you might not get the worth of your money on it. 1. Weight gainers These refers to drinks such as ?protein shakes? that is primarily composed of whey which is a rich source of protein. Aside from whey, other weight gainers also include proteins coming from milk and other poultry products along with high levels of carbohydrate content that comes in the form of ?maltodextrin? which is a complex carbohydrate that has high glycemic content. These are very helpful for those who want to gain weight fast because they are pure sources of calories needed to build muscles fast. 2.Creatine. This is a weight gain supplement that promises results as early as two weeks. A metabolite product by the body consisting of important weight gaining amino acids, creatine is preferred by more and more people who looking forward to gain weight because it has the ability to regenerate ATP, which is the body's ultimate energy source. 3.L-glutamine. This is known as the most abundant amino acid that is present in a person's muscle cells. When taken in a form of capsule of tablet, L-glutamine can give protection to your muscles during rigorous workouts and can also enhance your immune system to make it more susceptible to increase body mass. 4.Liver tablets. With beef liver as its primary source, liver tablets are used by many people as one of their favorite weight gain supplements because they can be easy to use. With regular intake of liver tablets that contain the highest and purest grade of protein, you can gain weight in no time. 5.Testosterone boosting supplements. Experts say that this is one of those weight gain supplements that would best work on adults especially to those who are into bodybuilding.Testosterone boosting supplements are perfect for those people 25 years or above because there is lesser possibility of hormonal imbalance. People who are less than 25 years of age should stay away from these types of weight gain supplements because their body cannot fight off its possible side effects.Teenagers are also advised to veer away from these types of weight gain supplements because these can greatly affect their hormonal growth and balance.