Ggarcinia cambogia, also known as garcinia gummi-gutta, is grow in southeastern asia, and west and central africa. The fruit looks like a yellowish, greenish or reddish pumpkin which is also commonly known as gambooge. In the indian ayurvedic medicine, "sour" flavors are toldsaid to activate digestion. In the areas where it is consumed, garcinia cambogia is considered to be effective in making meals more "filling" and therefore helping people feel more satiated. The researchers have studied garcinia cambogia for years, and it is known that the key ingredient of garcinia cambogia is hca.(hydroxy citric acid).