They’ ve all been used as weight- loss aids. A supplement produced from an exotic fruit, garcinia cambogia, is. Find out exactly how does Garcinia Cambogia work, what should you look for in a Garcinia Cambogia Extract supplement and to look slim in no time! Purely Herbs Garcinia Cambogia Reviews: It is a weight loss supplement that has its share of benefits due to its natural fruit extracts having Medicinal. Garcinia cambogia ( GC) is a small, pumpkin- shaped fruit that grows in Southeast Asia and India.