Garcinia cambogia is a fruit that resembles a pumpkin, but is much smaller in size. It is mainly found in India and also in different parts of Asia. Garcinia cambogia extract, from the fruit and the rind, also known as a hydorxy citric acid, is a popular ingredient in several weight loss products. This extract is so popular because it is known to burn fats and suppress the appetite, thereby contributing to effective weight loss.